Bayer AG (
English: ,
commonly pronounced ; ) is a German
multinational pharmaceutical
Medication (also called medicament, medicine, pharmaceutical drug, medicinal product, medicinal drug or simply drug) is a drug used to diagnose, cure, treat, or prevent disease. Drug therapy ( pharmacotherapy) is an important part of the ...
and
biotechnology
Biotechnology is a multidisciplinary field that involves the integration of natural sciences and Engineering Science, engineering sciences in order to achieve the application of organisms and parts thereof for products and services. Specialists ...
company and is one of the largest
pharmaceutical companies
The pharmaceutical industry is a Medicine, medical industry that discovers, develops, produces, and markets pharmaceutical goods such as medications and medical devices. Medications are then administered to (or Self-medicate, self-administered b ...
and
biomedical companies in the world. Headquartered in
Leverkusen
Leverkusen () is a city in North Rhine-Westphalia, Germany, on the eastern bank of the Rhine. To the south, Leverkusen borders the city of Cologne, and to the north the state capital, Düsseldorf. The city is part of the Rhine-Ruhr Metropolitan ...
, Bayer's areas of business include: pharmaceuticals, consumer healthcare products,
agricultural chemicals
An agrochemical or agrichemical, a contraction of ''agricultural chemical'', is a chemical product used in industrial agriculture. Agrichemical typically refers to biocides (pesticides including insecticides, herbicides, fungicides and nematicid ...
, seeds and biotechnology products. The company is a component of the
EURO STOXX 50 stock market index.
Bayer was founded in 1863 in
Barmen
Barmen is a former industrial metropolis of the region of Bergisches Land, Germany, which merged with four other towns in 1929 to form the city of Wuppertal.
Barmen, together with the neighbouring town of Elberfeld founded the first electric ...
as a partnership between dye salesman
Friedrich Bayer
Friedrich Bayer (born Friedrich Beyer, 6 June 1825 in Barmen now Wuppertal – 6 May 1880 in Würzburg) was the founder of what would become Bayer, a German chemical and pharmaceutical company. He founded the dyestuff factory ''Friedrich Bayer'' ...
(1825–1880) and dyer Friedrich Weskott (1821–1876). The company was established as a
dye
Juan de Guillebon, better known by his stage name DyE, is a French musician. He is known for the music video of the single "Fantasy
Fantasy is a genre of speculative fiction that involves supernatural or Magic (supernatural), magical ele ...
stuffs producer, but the versatility of aniline chemistry led Bayer to expand its business into other areas. In 1899, Bayer launched the compound acetylsalicylic acid under the trademarked name
Aspirin
Aspirin () is the genericized trademark for acetylsalicylic acid (ASA), a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation, and as an antithrombotic. Specific inflammatory conditions that aspirin is ...
. Aspirin is on the
World Health Organization's List of Essential Medicines
The WHO Model List of Essential Medicines (aka Essential Medicines List or EML), published by the World Health Organization (WHO), contains the medications considered to be most effective and safe to meet the most important needs in a health s ...
.
In 2021, it was the 34th most commonly
prescribed medication in the United States, with more than 17million prescriptions.
In 1904, Bayer received a trademark for the "Bayer Cross" logo, which was subsequently stamped onto each aspirin tablet, creating an iconic product that is still sold by Bayer. Other commonly known products initially commercialized by Bayer include
heroin
Heroin, also known as diacetylmorphine and diamorphine among other names, is a morphinan opioid substance synthesized from the Opium, dried latex of the Papaver somniferum, opium poppy; it is mainly used as a recreational drug for its eupho ...
,
phenobarbital
Phenobarbital, also known as phenobarbitone or phenobarb, sold under the brand name Luminal among others, is a medication of the barbiturate type. It is recommended by the World Health Organization (WHO) for the treatment of certain types of ...
,
polyurethanes
Polyurethane (; often abbreviated PUR and PU) is a class of polymers composed of organic chemistry, organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane term ...
, and
polycarbonates
Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily wor ...
.
In 1925, Bayer merged with five other German companies to form
IG Farben
I. G. Farbenindustrie AG, commonly known as IG Farben, was a German Chemical industry, chemical and Pharmaceutical industry, pharmaceutical conglomerate (company), conglomerate. It was formed on December 2, 1925 from a merger of six chemical co ...
, creating the world's largest chemical and pharmaceutical company. The first
sulfonamide
In organic chemistry, the sulfonamide functional group (also spelled sulphonamide) is an organosulfur group with the Chemical structure, structure . It consists of a sulfonyl group () connected to an amine group (). Relatively speaking this gro ...
and the first
systemically active antibacterial drug, forerunner of
antibiotics
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting pathogenic bacteria, bacterial infections, and antibiotic medications are widely used in the therapy ...
,
Prontosil
Prontosil is an antibacterial drug of the sulfonamide group. It has a relatively broad effect against gram-positive cocci but not against enterobacteria. One of the earliest antimicrobial drugs, it was widely used in the mid-20th century but is ...
, was developed by a research team led by
Gerhard Domagk
Gerhard Johannes Paul Domagk (; 30 October 1895 – 24 April 1964) was a German pathologist and bacteriologist.
He is credited with the discovery of Sulfonamide (medicine), sulfonamidochrysoidine (KL730) as an antibiotic for which he received th ...
in 1932 or 1933 at the Bayer Laboratories. Following
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the
Allied Control Council
The Allied Control Council (ACC) or Allied Control Authority (), also referred to as the Four Powers (), was the governing body of the Allies of World War II, Allied Allied-occupied Germany, occupation zones in Germany (1945–1949/1991) and Al ...
seized IG Farben's assets
because of its role in the
Nazi
Nazism (), formally named National Socialism (NS; , ), is the far-right politics, far-right Totalitarianism, totalitarian socio-political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During H ...
war effort and involvement in
the Holocaust
The Holocaust (), known in Hebrew language, Hebrew as the (), was the genocide of History of the Jews in Europe, European Jews during World War II. From 1941 to 1945, Nazi Germany and Collaboration with Nazi Germany and Fascist Italy ...
, including using slave labour from concentration camps and humans for dangerous medical testing, and production of
Zyklon B
Zyklon B (; translated Cyclone B) was the trade name of a cyanide-based pesticide invented in Germany in the early 1920s. It consists of hydrogen cyanide (prussic acid), as well as a cautionary eye irritant and one of several adsorbents such ...
, a chemical used in
gas chambers
A gas chamber is an apparatus for killing humans or animals with gas, consisting of a sealed chamber into which a poisonous or asphyxiant gas is introduced. Poisonous agents used include hydrogen cyanide and carbon monoxide.
History
Gener ...
. In 1951, IG Farben was split into its constituent companies, and Bayer was reincorporated as Farbenfabriken Bayer AG. After the war, Bayer re-hired several former Nazis to high-level positions, including convicted Nazi war criminals found guilty at the
IG Farben Trial like
Fritz ter Meer.
Bayer played a key role in the in post-war
West Germany
West Germany was the common English name for the Federal Republic of Germany (FRG) from its formation on 23 May 1949 until German reunification, its reunification with East Germany on 3 October 1990. It is sometimes known as the Bonn Republi ...
, quickly regaining its position as one of the world's largest chemical and pharmaceutical corporations.
In 2016, Bayer merged with the American multinational
Monsanto
The Monsanto Company () was an American agrochemical and agricultural biotechnology corporation founded in 1901 and headquartered in Creve Coeur, Missouri. Monsanto's best-known product is Roundup, a glyphosate-based herbicide, developed ...
in what was the biggest acquisition by a German company to date.
However, owing to the massive financial and reputational blows caused by ongoing litigation concerning Monsanto's herbicide
Roundup, the deal is considered one of the worst corporate mergers in history.
Bayer owns the
Bundesliga
The Bundesliga (; ), sometimes referred to as the Fußball-Bundesliga () or 1. Bundesliga (), is a professional association football league in Germany and the highest level of the German football league system. The Bundesliga comprises 18 teams ...
football club
In association football, a football club (or association football club, alternatively soccer club) is a sports club that acts as an entity through which association football teams organise their sporting activities. The club can exist either as ...
Bayer 04 Leverkusen
Bayer 04 Leverkusen, officially known as Bayer 04 Leverkusen Fußball GmbH () and commonly known as Bayer Leverkusen or simply Leverkusen, is a German professional association football, football club based in Leverkusen, North Rhine-Westphalia. ...
.
Early history
Foundation
Bayer AG was founded as a
dye
Juan de Guillebon, better known by his stage name DyE, is a French musician. He is known for the music video of the single "Fantasy
Fantasy is a genre of speculative fiction that involves supernatural or Magic (supernatural), magical ele ...
stuffs factory in 1863 in
Barmen
Barmen is a former industrial metropolis of the region of Bergisches Land, Germany, which merged with four other towns in 1929 to form the city of Wuppertal.
Barmen, together with the neighbouring town of Elberfeld founded the first electric ...
(later part of
Wuppertal
Wuppertal (; ) is a city in North Rhine-Westphalia, in western Germany, with a population of 355,000. Wuppertal is the seventh-largest city in North Rhine-Westphalia and List of cities in Germany by population, 17th-largest in Germany. It ...
), Germany, by
Friedrich Bayer
Friedrich Bayer (born Friedrich Beyer, 6 June 1825 in Barmen now Wuppertal – 6 May 1880 in Würzburg) was the founder of what would become Bayer, a German chemical and pharmaceutical company. He founded the dyestuff factory ''Friedrich Bayer'' ...
and his partner, Johann Friedrich Weskott, a master dyer. Bayer was responsible for the commercial tasks.
Fuchsine
Fuchsine (sometimes spelled fuchsin) or rosaniline hydrochloride is a magenta dye with chemical formula C20H19N3·HCl. and
aniline
Aniline (From , meaning ' indigo shrub', and ''-ine'' indicating a derived substance) is an organic compound with the formula . Consisting of a phenyl group () attached to an amino group (), aniline is the simplest aromatic amine. It is an in ...
became the company's most important products.
The headquarters and most production facilities moved from Barmen to a larger area in
Elberfeld
Elberfeld is a municipal subdivision of the Germany, German city of Wuppertal; it was an independent town until 1929.
History
The first official mentioning of the geographic area on the banks of today's Wupper River as "''elverfelde''" was ...
in 1866. Friedrich Bayer (1851–1920), the son of the company's founder, was a chemist and joined the company in 1873. After the death of his father in 1880, the company became a joint-stock company, Farbenfabriken vorm. Friedr. Bayer & Co, also known as Elberfelder Farbenfabriken.

A further expansion in Elberfeld was impossible, so the company moved to the village Wiesdorf at Rhein and settled in the area of the
alizarin
Alizarin (also known as 1,2-dihydroxyanthraquinone, Mordant Red 11, C.I. 58000, and Turkey Red) is an organic compound with formula that has been used throughout history as a red dye, principally for dyeing textile fabrics. Historically it wa ...
producer
Leverkus and Sons. A new city,
Leverkusen
Leverkusen () is a city in North Rhine-Westphalia, Germany, on the eastern bank of the Rhine. To the south, Leverkusen borders the city of Cologne, and to the north the state capital, Düsseldorf. The city is part of the Rhine-Ruhr Metropolitan ...
, was founded there in 1930 and became home to Bayer AG's headquarters. The company's corporate logo, the Bayer cross, was introduced in 1904, consisting of the word ''BAYER'' written vertically and horizontally, sharing the ''Y'' and enclosed in a circle. An illuminated version of the logo is a landmark in Leverkusen.
Aspirin
Bayer's first major product was
acetylsalicylic acid
Aspirin () is the Generic trademark, genericized trademark for acetylsalicylic acid (ASA), a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation, and as an antithrombotic. Specific inflammatory conditions ...
—first described by French chemist
Charles Frederic Gerhardt in 1853—a modification of
salicylic acid
Salicylic acid is an organic compound with the formula HOC6H4COOH. A colorless (or white), bitter-tasting solid, it is a precursor to and a active metabolite, metabolite of acetylsalicylic acid (aspirin). It is a plant hormone, and has been lis ...
or
salicin
Salicin is an alcoholic β-glucoside. Salicin is produced in (and named after) willow (''Salix'') bark. It is a biosynthetic precursor to salicylaldehyde.
Salicin hydrolyses into Glucose, β-d-glucose and salicyl alcohol (saligenin). Salicyl al ...
, a
folk remedy
Traditional medicine (also known as indigenous medicine or folk medicine) refers to the knowledge, skills, and practices rooted in the cultural beliefs of various societies, especially Indigenous groups, used for maintaining health and treatin ...
found in the
bark
Bark may refer to:
Common meanings
* Bark (botany), an outer layer of a woody plant such as a tree or stick
* Bark (sound), a vocalization of some animals (which is commonly the dog)
Arts and entertainment
* ''Bark'' (Jefferson Airplane album), ...
of the
willow
Willows, also called sallows and osiers, of the genus ''Salix'', comprise around 350 species (plus numerous hybrids) of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions.
Most species are known ...
plant.
[ By 1899, Bayer's trademark ]Aspirin
Aspirin () is the genericized trademark for acetylsalicylic acid (ASA), a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation, and as an antithrombotic. Specific inflammatory conditions that aspirin is ...
was registered worldwide for Bayer's brand of acetylsalicylic acid, but it lost its trademark status in the United States, France and the United Kingdom after the confiscation of Bayer's US assets and trademarks during World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
by the United States, and because of the subsequent widespread usage of the word.[
]
The term ''aspirin'' continued to be used in the US, UK and France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
for all brands of the drug, but it is still a registered trademark of Bayer in over 80 countries, including Canada, Mexico, Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
and Switzerland
Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...
. As of 2011, approximately 40,000 tons of aspirin were produced each year and 10–20 billion tablets consumed in the United States alone for prevention of cardiovascular events. It is on the WHO Model List of Essential Medicines
The WHO Model List of Essential Medicines (aka Essential Medicines List or EML), published by the World Health Organization (WHO), contains the medications considered to be most effective and safe to meet the most important needs in a health s ...
, the most important medications needed in a basic health system
A health system, health care system or healthcare system is an organization of people, institutions, and resources that delivers health care services to meet the health needs of target populations.
There is a wide variety of health systems aroun ...
.
There is an unresolved controversy over the roles played by Bayer scientists in the development of aspirin. Arthur Eichengrün, a Bayer chemist, said he was the first to discover an aspirin formulation that did not have the unpleasant side effects
In medicine, a side effect is an effect of the use of a medicinal drug or other treatment, usually adverse but sometimes beneficial, that is unintended. Herbal and traditional medicines also have side effects.
A drug or procedure usually used ...
of nausea
Nausea is a diffuse sensation of unease and discomfort, sometimes perceived as an urge to vomit. It can be a debilitating symptom if prolonged and has been described as placing discomfort on the chest, abdomen, or back of the throat.
Over 30 d ...
and gastric pain. He also said he had invented the name ''aspirin'' and was the first person to use the new formulation to test its safety and efficacy. Bayer contends that aspirin was discovered by Felix Hoffmann
Felix Hoffmann (21 January 1868 – 8 February 1946) was a German chemist notable for re-synthesising diamorphine (independently from C.R. Alder Wright who synthesized it 23 years earlier), which was popularized under the Bayer trade name ...
to help his father, who had arthritis
Arthritis is a general medical term used to describe a disorder that affects joints. Symptoms generally include joint pain and stiffness. Other symptoms may include redness, warmth, Joint effusion, swelling, and decreased range of motion of ...
. Various sources support the conflicting claims. Most mainstream historians attribute the invention of aspirin to Hoffmann and/or Eichengrün.[
]
Heroin
Heroin
Heroin, also known as diacetylmorphine and diamorphine among other names, is a morphinan opioid substance synthesized from the Opium, dried latex of the Papaver somniferum, opium poppy; it is mainly used as a recreational drug for its eupho ...
(diacetylmorphine), now illegal as an addictive drug, was introduced as a non-addictive substitute for morphine
Morphine, formerly also called morphia, is an opiate that is found naturally in opium, a dark brown resin produced by drying the latex of opium poppies (''Papaver somniferum''). It is mainly used as an analgesic (pain medication). There are ...
,[Moore, Deborah (24 August 2014)]
"Heroin: A brief history of unintended consequences"
''Times Union''. and trademarked and marketed by Bayer from 1898 to 1910 as a cough suppressant and over-the-counter treatment for other common ailments, including pneumonia
Pneumonia is an Inflammation, inflammatory condition of the lung primarily affecting the small air sacs known as Pulmonary alveolus, alveoli. Symptoms typically include some combination of Cough#Classification, productive or dry cough, ches ...
and tuberculosis
Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, is a contagious disease usually caused by ''Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can al ...
. While Bayer scientists were not the first to make heroin, the company did lead the way in commercializing it. ''Heroin'' was a Bayer trademark until after World War I. Bayer's director of pharmacology did not want the drug to have "too complicated a name" so Bayer settled on heroisch, the German word for heroic.
Phenobarbital
In 1903, Bayer licensed the patent for the hypnotic drug diethylbarbituric acid from its inventors Emil Fischer and Joseph von Mering. It was marketed under the trade name Veronal as a sleep aid beginning in 1904. Systematic investigations of the effect of structural changes on potency and duration of action at Bayer led to the discovery of phenobarbital
Phenobarbital, also known as phenobarbitone or phenobarb, sold under the brand name Luminal among others, is a medication of the barbiturate type. It is recommended by the World Health Organization (WHO) for the treatment of certain types of ...
in 1911 and the discovery of its potent anti-epileptic activity in 1912. Phenobarbital was among the most widely used drugs for the treatment of epilepsy
Epilepsy is a group of Non-communicable disease, non-communicable Neurological disorder, neurological disorders characterized by a tendency for recurrent, unprovoked Seizure, seizures. A seizure is a sudden burst of abnormal electrical activit ...
through the 1970s, and as of 2014 it remains on the World Health Organization's list of essential medications.
World War I
During World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
(1914–1918), Bayer's assets, including the rights to its name and trademarks, were confiscated in the United States, Canada and several other countries. In the United States and Canada, Bayer's assets and trademarks, including the well-known Bayer cross, were acquired by Sterling Drug
Sterling Drug was an American based global pharmaceutical company. It was also known as Sterling Winthrop, Inc., after the merger with Winthrop-Stearns Inc. which itself resulted from the merger of Winthrop Chemical Company Inc. and Frederick Ste ...
, a predecessor of Sterling Winthrop and were not reclaimed until 1994.
Throughout the war, Bayer was involved in production and development of various chemical weapons. In 1914, Bayer manufactured dianisidine chlorosulfate for use in 105 mm artillery shell, intended as a lung irritant against British forces.
In 1916, Bayer scientists discovered suramin
Suramin is a medication used to treat African sleeping sickness and river blindness. It is the treatment of choice for sleeping sickness without central nervous system involvement. It is given by injection into a vein.
Suramin causes a fai ...
, an anti-parasite
Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted str ...
drug that is still sold by Bayer under the brand name Germanin. The formula of suramin was kept secret by Bayer for commercial reasons, but it was elucidated and published in 1924 by Ernest Fourneau and his team at the Pasteur Institute
The Pasteur Institute (, ) is a French non-profit private foundation dedicated to the study of biology, micro-organisms, diseases, and vaccines. It is named after Louis Pasteur, who invented pasteurization and vaccines for anthrax and rabies. Th ...
. It is on the World Health Organization's List of Essential Medicines
The WHO Model List of Essential Medicines (aka Essential Medicines List or EML), published by the World Health Organization (WHO), contains the medications considered to be most effective and safe to meet the most important needs in a health s ...
.
IG Farben
In 1925, Bayer became part of IG Farben
I. G. Farbenindustrie AG, commonly known as IG Farben, was a German Chemical industry, chemical and Pharmaceutical industry, pharmaceutical conglomerate (company), conglomerate. It was formed on December 2, 1925 from a merger of six chemical co ...
, a German conglomerate formed from the merger of six chemical companies: BASF
BASF SE (), an initialism of its original name , is a European Multinational corporation, multinational company and the List of largest chemical producers, largest chemical producer in the world. Its headquarters are located in Ludwigshafen, Ge ...
, Bayer
Bayer AG (English: , commonly pronounced ; ) is a German multinational pharmaceutical and biotechnology company and is one of the largest pharmaceutical companies and biomedical companies in the world. Headquartered in Leverkusen, Bayer' ...
, Hoechst (including Cassella and ), Agfa
Agfa-Gevaert N.V. (Agfa) is a Belgian-German multinational corporation that develops, manufactures, and distributes Analog photography, analogue and digital imaging products, software, and systems.
The company began as a dye manufacturer in 1867 ...
, Chemische Fabrik Griesheim-Elektron, and Chemische Fabrik vorm. Weiler Ter Meer. In the 1930s, Gerhard Domagk
Gerhard Johannes Paul Domagk (; 30 October 1895 – 24 April 1964) was a German pathologist and bacteriologist.
He is credited with the discovery of Sulfonamide (medicine), sulfonamidochrysoidine (KL730) as an antibiotic for which he received th ...
, director of Bayer's Institute of Pathology and Bacteriology, working with chemists Fritz Mietzsch and Joseph Klarer, discovered prontosil
Prontosil is an antibacterial drug of the sulfonamide group. It has a relatively broad effect against gram-positive cocci but not against enterobacteria. One of the earliest antimicrobial drugs, it was widely used in the mid-20th century but is ...
, the first commercially available antibacterial drug. The discovery and development of this first sulfonamide
In organic chemistry, the sulfonamide functional group (also spelled sulphonamide) is an organosulfur group with the Chemical structure, structure . It consists of a sulfonyl group () connected to an amine group (). Relatively speaking this gro ...
drug opened a new era in medicine. Domagk won the Nobel Prize in Physiology or Medicine in 1939 "for the discovery of the antibacterial effects of prontosil". He was forced by the Nazi Party
The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right politics, far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor ...
to relinquish the reward; German citizens had been forbidden from accepting Nobel prizes since the Nobel committee had awarded the 1935 Nobel Peace Prize to a German pacifist, Carl von Ossietzky
Carl von Ossietzky (; 3 October 1889 – 4 May 1938) was a German journalist and Pacifism, pacifist. He was the recipient of the 1935 Nobel Peace Prize for his work in exposing the clandestine German rearmament.
As editor-in-chief of the magazin ...
.
World War II and the Holocaust
IG Farben
I. G. Farbenindustrie AG, commonly known as IG Farben, was a German Chemical industry, chemical and Pharmaceutical industry, pharmaceutical conglomerate (company), conglomerate. It was formed on December 2, 1925 from a merger of six chemical co ...
, Bayer's parent company, used slave labour
Slavery is the ownership of a person as property, especially in regards to their labour. Slavery typically involves compulsory work, with the slave's location of work and residence dictated by the party that holds them in bondage. Enslavemen ...
in factories it built in Nazi concentration camps
From 1933 to 1945, Nazi Germany operated more than a thousand concentration camps (), including subcamp (SS), subcamps on its own territory and in parts of German-occupied Europe.
The first camps were established in March 1933 immediately af ...
, most notably in the Monowitz concentration camp
Monowitz (also known as Monowitz-Buna, Buna and Auschwitz III) was a Nazi concentration camp and labor camp (''Arbeitslager'') run by Nazi Germany in occupied Poland from 1942–1945, during World War II and the Holocaust. For most of its existe ...
(known as Auschwitz III), part of the Auschwitz camp complex in German-occupied Poland. By 1943, almost half of IG Farben's 330,000-strong workforce consisted of slave labour or conscripts, including 30,000 Auschwitz prisoners.
Helmuth Vetter, an Auschwitz camp physician, SS captain and employee of the Bayer group within IG Farben conducted medical experiments on inmates at Auschwitz and at the Mauthausen concentration camp
Mauthausen was a German Nazi concentration camp on a hill above the market town of Mauthausen, Upper Austria, Mauthausen (roughly east of Linz), Upper Austria. It was the main camp of a group with List of subcamps of Mauthausen, nearly 100 f ...
. In one study of an anaesthetic, the company paid RM 170 per person for the use of 150 female inmates of Auschwitz. A Bayer employee wrote to Rudolf Höss
Rudolf Franz Ferdinand Höss (also Höß, Hoeß, or Hoess; ; 25 November 1901 – 16 April 1947) was a German SS officer and the commandant of the Auschwitz concentration camp. After the defeat of Nazi Germany and the end of World War II, he w ...
, the Auschwitz commandant: "The transport of 150 women arrived in good condition. However, we were unable to obtain conclusive results because they died during the experiments. We would kindly request that you send us another group of women to the same number and at the same price."
After the war, the Allied Control Council
The Allied Control Council (ACC) or Allied Control Authority (), also referred to as the Four Powers (), was the governing body of the Allies of World War II, Allied Allied-occupied Germany, occupation zones in Germany (1945–1949/1991) and Al ...
seized IG Farben for "knowingly and prominently ... building up and maintaining German war potential". It was split into its six constituent companies in 1951, then split again into three: BASF, Bayer and Hoechst. Bayer was at that point known as Farbenfabriken Bayer AG; it changed its name to Bayer AG in 1972. After the war, some employees of Bayer appeared in the IG Farben Trial, one of the Nuremberg Subsequent Tribunals under US jurisdiction. Among them was Fritz ter Meer, who helped to plan the Monowitz camp (Auschwitz III) and IG Farben's Buna Werke factory at Auschwitz, where medical experimentation had been conducted and where 25,000 forced laborers were deployed. Ter Meer was sentenced to seven years, but was released in 1950. Despite being a convicted Nazi war criminal
The following is a list of people who were formally indicted for committing war crimes or crimes against humanity on behalf of the Axis powers during World War II, including those who were acquitted or never received judgement. It does not includ ...
, Ter Meer was elected as chairman
The chair, also chairman, chairwoman, or chairperson, is the presiding officer of an organized group such as a board, committee, or deliberative assembly. The person holding the office, who is typically elected or appointed by members of the gro ...
of Bayer AG's supervisory board in 1956, a position he retained until 1964.
Helge Wehmeier, then CEO of Bayer, offered a public apology in 1995 to Elie Wiesel
Eliezer "Elie" Wiesel (September 30, 1928 – July 2, 2016) was a Romanian-born American writer, professor, political activist, List of Nobel Peace Prize laureates#1980, Nobel laureate, and Holocaust survivor. He authored Elie Wiesel bibliogra ...
for the company's actions during World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
(1939–1945) and the Holocaust
The Holocaust (), known in Hebrew language, Hebrew as the (), was the genocide of History of the Jews in Europe, European Jews during World War II. From 1941 to 1945, Nazi Germany and Collaboration with Nazi Germany and Fascist Italy ...
.
Products
Overview
In 1953, Bayer brought the first neuroleptic (chlorpromazine
Chlorpromazine (CPZ), marketed under the brand names Thorazine and Largactil among others, is an antipsychotic medication. It is primarily used to treat psychotic disorders such as schizophrenia. Other uses include the treatment of bipolar d ...
) onto the German market. In the 1960s, Bayer
introduced a pregnancy test, Primodos, that consisted of two pills that contained norethisterone
Norethisterone, also known as norethindrone and sold under the brand name Norlutin among others, is a progestin medication used in birth control pills, menopausal hormone therapy, and for the treatment of gynecological disorders. The medicatio ...
(as acetate) and ethinylestradiol
Ethinylestradiol (EE) is an estrogen medication which is used widely in birth control pills in combination with progestins. Ethinylestradiol was widely used for various indications such as the treatment of menopausal symptoms, gynecological ...
. It detected pregnancy by inducing menstruation
Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and Mucous membrane, mucosal tissue from the endometrium, inner lining of the uterus through the vagina. The menstrual cycle is characterized ...
in women who were not pregnant; the presence or absence of menstrual bleeding was then used to determine whether the user was pregnant. The test became the subject of controversy when it was blamed for birth defect
A birth defect is an abnormal condition that is present at birth, regardless of its cause. Birth defects may result in disabilities that may be physical, intellectual, or developmental. The disabilities can range from mild to severe. Birth de ...
s, and it was withdrawn from the market in the mid-1970s. Litigation in the 1980s ended inconclusively. A review of the matter by the Medicines and Healthcare products Regulatory Agency
The Medicines and Healthcare products Regulatory Agency (MHRA) is an executive agency of the Department of Health and Social Care in the United Kingdom which is responsible for ensuring that medicines and medical devices work and are accepta ...
in 2014 assessed the studies performed to date and found the evidence for adverse effects to be inconclusive.
In 1978, Bayer purchased Miles Laboratories
Miles Laboratories (originally the Dr. Miles Medical Company) was a pharmaceutical company founded in Elkhart, Indiana, in 1884 by Dr. Franklin L. Miles, a specialist in the treatment of eye and ear disorders, with an interest in the connection ...
and its subsidiaries Miles Canada and Cutter Laboratories
Cutter Laboratories was a family-owned pharmaceutical company located in Berkeley, California, founded by Edward Ahern Cutter in 1897. Cutter's early products included anthrax vaccine, hog cholera (swine fever) virus, and anti-hog cholera serum� ...
, acquiring along with them a variety of product lines including Alka-Seltzer
Alka-Seltzer is an effervescent antacid and pain reliever owned by Bayer since 1978. First marketed by the Dr. Miles Medicine Company of Elkhart, Indiana, United States, Alka-Seltzer contains three active ingredients: aspirin (acetylsalicylic ac ...
, Flintstones vitamins and One-A-Day vitamins, and Cutter insect repellent
An insect repellent (also commonly called "bug spray" or "bug deterrent") is a substance applied to the skin, clothing, or other surfaces to discourage insects (and arthropods in general) from landing or climbing on that surface. Insect repellent ...
.
Along with the purchase of Cutter, Bayer acquired Cutter's Factor VIII
Coagulation factor VIII (Factor VIII, FVIII, also known as anti-hemophilic factor (AHF)) is an essential blood clotting protein. In humans, it is encoded by ''F8'' gene. Defects in this gene result in hemophilia A, an X-linked bleeding disorder ...
business. Factor VIII, a clotting agent used to treat hemophilia
Haemophilia (British English), or hemophilia (American English) (), is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding. This results in people bleeding for a long ...
, was produced, at the time, by processing donated blood. In the early days of the AIDS epidemic, people with hemophilia were found to have higher rates of AIDS, and by 1983 the CDC had identified contaminated blood products as a source of infection. According to the ''New York Times'', this was "one of the worst drug-related medical disasters in history". Companies, including Bayer, developed new ways to treat donated blood with heat to decontaminate it, and these new products were introduced early in 1984. In 1997, Bayer and the other three makers of such blood products agreed to pay $660 million to settle cases on behalf of more than 6,000 hemophiliacs infected in United States. But in 2003, documents emerged showing that Cutter had continued to sell unheated blood products in markets outside the US until 1985, including in Malaysia, Singapore, Indonesia, Japan and Argentina, to offload a product they were unable to sell in Europe and the US; they also continued manufacturing the unheated product for several months. Bayer said it did this because some countries were doubtful about the efficacy of the new product.
Bayer has been involved in other controversies regarding its drug products. In the late 1990s it introduced a statin
Statins (or HMG-CoA reductase inhibitors) are a class of medications that lower cholesterol. They are prescribed typically to people who are at high risk of cardiovascular disease.
Low-density lipoprotein (LDL) carriers of cholesterol play ...
drug, Baycol ( cerivastatin), but after 52 deaths were attributed to it, Bayer discontinued it in 2001. The side effect was rhabdomyolysis
Rhabdomyolysis (shortened as rhabdo) is a condition in which damaged skeletal muscle breaks down rapidly. Symptoms may include muscle pains, weakness, vomiting, and confusion. There may be tea-colored urine or an irregular heartbeat. Some o ...
, causing kidney failure
Kidney failure, also known as renal failure or end-stage renal disease (ESRD), is a medical condition in which the kidneys can no longer adequately filter waste products from the blood, functioning at less than 15% of normal levels. Kidney fa ...
, which occurred with a tenfold greater frequency in patients treated with Baycol in comparison to those prescribed alternate medications of the statin class. Trasylol (aprotinin
The drug aprotinin (Trasylol, previously Bayer and now Nordic Group pharmaceuticals), is a small protein bovine pancreatic trypsin inhibitor (BPTI), or basic trypsin inhibitor of bovine pancreas, which is an antifibrinolytic molecule that inhibi ...
), used to control bleeding during major surgery, was withdrawn from the market worldwide in 2007 when reports of increased mortality emerged; it was later re-introduced in Europe but not in the US.
Top-selling pharmaceutical products
In 2014, pharmaceutical products contributed €12.05 billion of Bayer's €40.15 billion in gross revenue. In 2019, identified "key growth" products were Xarelto (rivaroxaban
Rivaroxaban, sold under the brand name Xarelto among others, is an anticoagulant medication (blood thinner) used to treat and reduce the risk of blood clots. Specifically it is used to treat deep vein thrombosis and pulmonary emboli and prev ...
), Eylea (aflibercept
Aflibercept, sold under the brand names Eylea and Zaltrap among others, is a medication used to treat wet macular degeneration and metastatic colorectal cancer. It was developed by Regeneron Pharmaceuticals.
It is an inhibitor of vascular en ...
), Stivarga (regorafenib
Regorafenib, sold under the brand name Stivarga among others, is an oral multi-kinase inhibitor developed by Bayer which targets angiogenic, stromal and oncogenic receptor tyrosine kinase (RTK). Regorafenib shows anti-angiogenic activity due to ...
), Xofigo (radium-223
Radium-223 (223Ra, Ra-223) is an Isotopes of radium#Radium-223, isotope of radium with an 11.4-day half-life. It was discovered in 1905 by T. Godlewski, a Polish chemist from Kraków, and was historically known as Decay chain#Actinium series, a ...
), and Adempas (riociguat). Top-selling products as of 2014 included:
* Kogenate ( recombinant clotting factor VIII). Kogenate is a recombinant version of clotting factor VIII, the absence or deficiency of which causes the abnormal bleeding associated with haemophilia type A. Kogenate is one of several commercially available Factor VIII products having equivalent efficacy.
* Xarelto (rivaroxaban
Rivaroxaban, sold under the brand name Xarelto among others, is an anticoagulant medication (blood thinner) used to treat and reduce the risk of blood clots. Specifically it is used to treat deep vein thrombosis and pulmonary emboli and prev ...
) is a small molecule inhibitor of Factor X
Coagulation factor X (), or Stuart factor, is an enzyme of the coagulation cascade, encoded in humans by ''F10'' gene. It is a serine endopeptidase (protease group S1, PA clan). Factor X is synthesized in the liver and requires vitamin K for i ...
a, a key enzyme involved in blood coagulation
Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood clot. It results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair. The process of coagulatio ...
. In the United States, the FDA has approved rivaroxaban for the prevention of stroke in people with atrial fibrillation
Atrial fibrillation (AF, AFib or A-fib) is an Heart arrhythmia, abnormal heart rhythm (arrhythmia) characterized by fibrillation, rapid and irregular beating of the Atrium (heart), atrial chambers of the heart. It often begins as short periods ...
, for the treatment of deep vein thrombosis
Deep vein thrombosis (DVT) is a type of venous thrombosis involving the formation of a blood clot in a deep vein, most commonly in the legs or pelvis. A minority of DVTs occur in the arms. Symptoms can include pain, swelling, redness, and enl ...
and pulmonary embolism
Pulmonary embolism (PE) is a blockage of an pulmonary artery, artery in the lungs by a substance that has moved from elsewhere in the body through the bloodstream (embolism). Symptoms of a PE may include dyspnea, shortness of breath, chest pain ...
, and for the prevention of deep vein thrombosis in people undergoing hip surgery. Rivaroxaban competes with other newer generation anticoagulants such as edoxaban
Edoxaban, sold under the brand name Lixiana among others, is an anticoagulant medication and a direct factor Xa inhibitor. It is taken by mouth.
Compared with warfarin, it has fewer drug interactions, and does not require regular assessment ...
, apixaban
Apixaban, sold under the brand name Eliquis, is an anticoagulant medication used to treat and prevent blood clots and to prevent stroke in people with nonvalvular atrial fibrillation through directly inhibiting factor Xa. It is used as an al ...
, and dabigatran
Dabigatran, sold under the brand name Pradaxa among others, is an anticoagulant used to treat and prevent blood clots and to prevent stroke in people with atrial fibrillation. It is commonly used to prevent blood clots following hip or kn ...
as well as with the generic anticoagulant warfarin. It has similar efficacy to warfarin and is associated with a lower risk of intracranial bleeding, but unlike warfarin there is no established protocol for rapidly reversing its effects in the event of uncontrolled bleeding or the need for emergency surgery.
* Betaseron (interferon beta-1b
Interferon beta-1b is a cytokine in the interferon family used to treat the relapsing-remitting and secondary-progressive forms of multiple sclerosis (MS). It is approved for use after the first MS event. Closely related is interferon beta 1a, als ...
) is an injectable form of the protein interferon beta
The type-I interferons (IFN) are cytokines which play essential roles in inflammation, immunoregulation, tumor cells recognition, and T cell, T-cell responses. In the human genome, a cluster of thirteen functional IFN genes is located at the 9p2 ...
used to prevent relapses in the relapsing remitting form of multiple sclerosis
Multiple sclerosis (MS) is an autoimmune disease resulting in damage to myelinthe insulating covers of nerve cellsin the brain and spinal cord. As a demyelinating disease, MS disrupts the nervous system's ability to Action potential, transmit ...
. Betaseron competes with other injectable forms of interferon beta, glatiramer acetate
Glatiramer acetate, sold under the brand name Copaxone among others, is an immunomodulator medication used to treat multiple sclerosis. Glatiramer acetate is approved in the United States to reduce the frequency of relapses, but not for reduci ...
, and a variety of newer multiple sclerosis drugs, some of which can be taken orally (Dimethyl fumarate
Dimethyl fumarate (DMF) is the methyl ester of fumaric acid and is named after the earth smoke plant (''Fumaria officinalis''). Dimethyl fumarate combined with three other fumaric acid esters (FAEs) is solely licensed in Germany as an oral thera ...
, teriflunomide
Teriflunomide, sold under the brand name Aubagio, is the active metabolite of leflunomide. Teriflunomide was investigated in the Phase III clinical trial TEMSO as a medication for multiple sclerosis (MS). The study was completed in July 2010 ...
, others).
* Yasmin / Yaz birth control pills are part of a group of birth control pill products based on the progestin
A progestogen, also referred to as a progestagen, gestagen, or gestogen, is a type of medication which produces effects similar to those of the natural female sex hormone progesterone in the body. A progestin is a '' synthetic'' progestogen. ...
drospirenone
Drospirenone is a progestin and antiandrogen medication which is used in birth control pills to prevent pregnancy and in menopausal hormone therapy, among other uses. It is available both alone under the brand name Slynd and in combination ...
. Yaz is approved in the United States for the prevention of pregnancy, to treat symptoms of premenstrual dysphoric disorder in women who choose an oral contraceptive for contraception, and to treat moderate acne in women at least 14 years of age who choose an oral contraceptive for contraception. The FDA conducted a safety review regarding the potential of Yaz and other drospirenone-containing products to increase the risk of blood clots; Yaz and Yasmin were associated with the deaths of 23 women in Canada, leading Health Canada
Health Canada (HC; )Health Canada is the applied title under the Federal Identity Program; the legal title is Department of Health (). is the Structure of the Canadian federal government#Departments, with subsidiary units, department of the Gove ...
to issue a warning in 2011. Although conflicting results were obtained in different studies, the FDA added a warning to the label in 2012 that Yaz and related products may be associated with an increased risk of clotting relative to other birth control pill products. Subsequently, a meta analysis suggested that birth control pills of the class Yasmin belongs to raise the risk of blood clots to a greater extent than some other classes of birth control pills.
*Nexavar (sorafenib
Sorafenib, sold under the brand name Nexavar, is a kinase inhibitor drug approved for the treatment of primary kidney cancer (advanced renal cell carcinoma), advanced primary liver cancer (hepatocellular carcinoma), FLT3-ITD positive AML and ra ...
) is a kinase inhibitor used in the treatment of liver cancer (hepatocellular carcinoma
Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer in adults and is currently the most common cause of death in people with cirrhosis. HCC is the third leading cause of cancer-related deaths worldwide.
HCC most common ...
), kidney cancer (renal cell carcinoma
Renal cell carcinoma (RCC) is a kidney cancer that originates in the lining of the Proximal tubule, proximal convoluted tubule, a part of the very small tubes in the kidney that transport primary urine. RCC is the most common type of kidney cance ...
), and certain types of thyroid cancer
Thyroid cancer is cancer that develops from the tissues of the thyroid gland. It is a disease in which cells grow abnormally and have the potential to spread to other parts of the body. Symptoms can include swelling or a lump in the neck, ...
.
* Trasylol (Aprotinin
The drug aprotinin (Trasylol, previously Bayer and now Nordic Group pharmaceuticals), is a small protein bovine pancreatic trypsin inhibitor (BPTI), or basic trypsin inhibitor of bovine pancreas, which is an antifibrinolytic molecule that inhibi ...
) Trasylol is a trypsin inhibitor used to control bleeding during major surgery. In a 2006 meeting called by the FDA to review the drug's safety, Bayer scientists failed to reveal the results of an ongoing large study suggesting that Trasylol may increase the risks of death and stroke. According to a FDA official who preferred to remain anonymous, the FDA learned of the study only through information provided to the FDA by a whistleblowing scientist who was involved in it. The study concluded Trasylol carried greater risks of death, serious kidney damage, congestive heart failure and strokes. On 15 December of the same year, the FDA restricted the use of Trasylol, and in November 2007, they requested that the company suspend marketing. In 2011, Health Canada lifted its suspension of Trasylol for its originally approved indication of limiting bleeding in coronary bypass surgery, citing flaws in the design of the studies that led to its suspension. This decision was controversial. In 2013, the European Medicines Agency lifted its suspension of the Trasylol marketing authorization for selected patients undergoing cardiac bypass surgery, citing a favorable risk-benefit ratio.
* Cipro (ciprofloxacin
Ciprofloxacin is a fluoroquinolone antibiotic used to treat a number of bacterial infections. This includes bone and joint infections, intra-abdominal infections, certain types of infectious diarrhea, respiratory tract infections, skin ...
) Ciprofloxacin was approved by the US Food and Drug Administration
The United States Food and Drug Administration (FDA or US FDA) is a federal agency of the Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food ...
(FDA) in 1987. Ciprofloxacin is the most widely used of the second-generation quinolone antibiotics that came into clinical use in the late 1980s and early 1990s. In 2010, over 20 million outpatient prescriptions were written for ciprofloxacin, making it the 35th-most commonly prescribed drug, and the 5th-most commonly prescribed antibacterial, in the US.
*Rennie antacid
An antacid is a substance which neutralization (chemistry), neutralizes gastric acid, stomach acidity and is used to relieve heartburn, indigestion, or an upset stomach. Some antacids have been used in the treatment of constipation and diarrhe ...
tablets, one of the biggest selling branded over-the-counter medications sold in Great Britain, with sales of £29.8 million.
Agricultural
Bayer produces various fungicides, herbicides, insecticides, and some crop varieties.
*Fungicides are primarily marketed for cereal crops, fresh produce, fungal with bacteria-based pesticides, and control of mildew
Mildew is a form of fungus. It is distinguished from its closely related counterpart, mold, largely by its colour: molds appear in shades of black, blue, red, and green, whereas mildew is white. It appears as a thin, superficial growth consisti ...
and rust
Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH) ...
diseases. ''Nativo'' products are a mixture of trifloxystrobin tebuconazole
Tebuconazole is a triazole fungicide used agriculturally to treat plant pathogenic fungi.
Environmental hazards
Though the U.S. Food and Drug Administration considers this fungicide to be safe for humans, it may still pose a risk. It is listed as ...
. ''XPro'' products are a mix of bixafenand prothioconazole, while ''Luna'' contains fluopyram and pyrimethanil.
*Herbicides are marketed primarily for field crops and orchards. ''Liberty'' brands containing glufosinate
Glufosinate (also known as phosphinothricin and often sold as an ammonium salt) is a naturally occurring broad-spectrum herbicide produced by several species of ''Streptomyces'' soil bacteria. Glufosinate is a non-selective, contact herbicide, w ...
( Liberty or Basta) are used for general weed control. ''Capreno'' containing a mixture of thiencarbazone-methyland tembotrione is used for grass and broad-leaf control.
*Insecticides are marketed according to specific crop and insect pest type. Foliar insecticides include ''Belt'' containing flubendiamide, which is marketed against Lepidopteran
Lepidoptera ( ) or lepidopterans is an order of winged insects which includes butterflies and moths. About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organisms, making it ...
pests, and ''Movento'' containing spirotetramat, which is marketed against sucking insects. Neonicotinoids
Neonicotinoids (sometimes shortened to neonics ) are a class of neuro-active insecticides chemically similar to nicotine, developed by scientists at Royal Dutch Shell, Shell and Bayer in the 1980s.
Neonicotinoids are among the widest-used insecti ...
such as clothianidin
Clothianidin is an insecticide developed by Takeda Chemical Industries and Bayer AG. Similar to thiamethoxam and imidacloprid, it is a neonicotinoid. Neonicotinoids are a class of insecticides that are chemically similar to nicotine, which has be ...
and imidacloprid
Imidacloprid is a systemic insecticide belonging to a class of chemicals called the neonicotinoids which act on the central nervous system of insects. The chemical works by interfering with the transmission of stimuli in the insect nervous system. ...
are used as systemic seed treatments products such as Poncho and Gaucho. In 2008, neonicotinoids came under increasing scrutiny over their environmental impacts starting in Germany. Neonicotinoid use has been linked in a range of studies to adverse ecological effects, including honey-bee colony collapse disorder
Colony collapse disorder (CCD) is an abnormal phenomenon that occurs when the majority of worker bees in a honey bee bee colony, colony disappear, leaving behind a queen bee, queen, plenty of food, and a few nurse bees to care for the remaining ...
(CCD) and loss of birds due to a reduction in insect populations. In 2013, the European Union and a few non EU countries restricted the use of certain neonicotinoids.[Bees & Pesticides: Commission goes ahead with plan to better protect bees.]
30 May 2013. Parathion
Parathion, also called parathion-ethyl or diethyl parathion, is an organophosphate insecticide and acaricide. It was originally developed by IG Farben in the 1940s. It is highly toxic to non-target organisms, including humans, so its use has been ...
was discovered by scientists at IG Farben in the 1940s as a cholinesterase inhibitor
Cholinesterase inhibitors (ChEIs), also known as anti-cholinesterase, are chemicals that prevent the breakdown of the neurotransmitter acetylcholine or butyrylcholine by cholinesterase. This increases the amount of the acetylcholine or butyryl ...
insecticide. Propoxur
Propoxur (Baygon) is a carbamate non-systemic insecticide, produced from catechol, and was introduced in 1959. It has a fast knockdown and long residual effect, and is used against turf, forestry, and household pests and fleas. It is also used in ...
is a carbamate
In organic chemistry, a carbamate is a category of organic compounds with the general Chemical formula, formula and Chemical structure, structure , which are formally Derivative (chemistry), derived from carbamic acid (). The term includes orga ...
insecticide that was introduced by Bayer in 1959.[EXTOXNET Extension Toxicology Network. Pesticide Information Profile. Propoxur.]
June 1996.
Acquisitions
Overview
In 1994, Bayer AG purchased Sterling Winthrop's over-the-counter
Over-the-counter (OTC) drugs are medicines sold directly to a consumer without a requirement for a prescription from a healthcare professional, as opposed to prescription drugs, which may be supplied only to consumers possessing a valid pres ...
(OTC) drug business from SmithKline Beecham
GSK plc (an acronym from its former name GlaxoSmithKline plc) is a British multinational pharmaceutical and biotechnology company with headquarters in London. It was established in 2000 by a merger of Glaxo Wellcome and SmithKline Beecham, w ...
and merged it with Miles Laboratories, thereby reclaiming the U.S. and Canadian trademark rights to "Bayer" and the Bayer cross, as well as the ownership of the Aspirin trademark in Canada.
In 2004, Bayer HealthCare acquired the over-the-counter pharmaceutical division of Roche
F. Hoffmann-La Roche AG, commonly known as Roche (), is a Switzerland, Swiss multinational corporation, multinational holding healthcare company that operates worldwide under two divisions: Pharmaceuticals and Diagnostics. Its holding company, ...
. In March 2008, Bayer HealthCare announced an agreement to acquire the portfolio and OTC division of privately owned Sagmel, Inc., a US-based company that markets OTC medications in most of the Commonwealth of Independent States
The Commonwealth of Independent States (CIS) is a regional organization, regional intergovernmental organization in Eurasia. It was formed following the dissolution of the Soviet Union, dissolution of the Soviet Union in 1991. It covers an ar ...
countries such as Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
, Ukraine
Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...
, Kazakhstan
Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a European Kazakhstan, small portion in Eastern Europe. It borders Russia to the Kazakhstan–Russia border, north and west, China to th ...
, Belarus
Belarus, officially the Republic of Belarus, is a landlocked country in Eastern Europe. It is bordered by Russia to the east and northeast, Ukraine to the south, Poland to the west, and Lithuania and Latvia to the northwest. Belarus spans an a ...
, and others.
On 28 August 2008, an explosion occurred at the Bayer CropScience facility at Institute, West Virginia
Institute is an Unincorporated area, unincorporated community on the Kanawha River in Kanawha County, West Virginia, Kanawha County, West Virginia, United States. Interstate 64 in West Virginia, Interstate 64 and West Virginia Route 25 pass by the ...
, United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
. A runaway reaction ruptured a tank and the resulting explosion killed two employees. The ruptured tank was close to a methyl isocyanate
Methyl isocyanate (MIC) is an organic compound with the molecular formula CH3NCO. Synonyms are isocyanatomethane and methyl carbylamine. Methyl isocyanate is an intermediate chemical in the production of carbamate pesticides and Haffmann Bromam ...
tank which was undamaged by the explosion.
Acquisition of Schering
In March 2006, Merck KGaA
The Merck Group, branded and commonly known as Merck, is a German Multinational corporation, multinational science and technology company headquartered in Darmstadt, with about 60,000 employees and a presence in 66 countries. The group include ...
announced a €14.6 billion bid for Schering AG
Schering AG was a research-centered German multinational pharmaceutical company headquartered in Wedding, Berlin, which operated as an independent company from 1851 to 2006. In 2006, it was bought by Bayer AG and merged to form the Bayer su ...
, founded in 1851. By 2006, Schering had annual gross revenue of around €5 billion and employed about 26,000 people in 140 subsidiaries worldwide. Bayer responded with a white knight
A white knight is a mythological figure and literary stock character. They are portrayed alongside a black knight as diametric opposites. A white knight usually represents a heroic warrior fighting against evil, with the role in medieval literatu ...
bid and in July acquired the majority of shares of Schering for €14.6 billion, and in 2007, Bayer took over Schering AG and formed Bayer Schering Pharma. The acquisition of Schering was the largest take-over in Bayer's history, and as of 2015, was one of the ten biggest pharma mergers of all time.
Other acquisitions
In November 2010, Bayer AG signed an agreement to buy Auckland-based animal health company Bomac Group. Bayer partnered on the development of the radiotherapeutic
Radiation therapy or radiotherapy (RT, RTx, or XRT) is a treatment using ionizing radiation, generally provided as part of cancer therapy to either kill or control the growth of malignant cells. It is normally delivered by a linear particle ac ...
Xofigo
Radium-223 (223Ra, Ra-223) is an isotope of radium with an 11.4-day half-life. It was discovered in 1905 by T. Godlewski, a Polish chemist from Kraków, and was historically known as actinium X (AcX). Radium-223 dichloride is an alpha particle ...
with Algeta, and in 2014, moved to acquire the company for about $2.9 billion. In 2014, Bayer agreed to buy Merck's consumer health business for $14.2 billion which would provide Bayer control with brands such as Claritin, Coppertone and Dr. Scholl's. Bayer would attain second place globally in nonprescription drugs. In June 2015, Bayer agreed to sell its diabetic
Diabetes mellitus, commonly known as diabetes, is a group of common endocrine diseases characterized by sustained high blood sugar levels. Diabetes is due to either the pancreas not producing enough of the hormone insulin, or the cells of th ...
care business to Panasonic
is a Japanese multinational electronics manufacturer, headquartered in Kadoma, Osaka, Kadoma, Japan. It was founded in 1918 as in Fukushima-ku, Osaka, Fukushima by Kōnosuke Matsushita. The company was incorporated in 1935 and renamed and c ...
Healthcare Holdings for a fee of $1.02 billion.
In August 2019, the business acquired the ≈60% of BlueRock Therapeutics it didn't already own for up to $600 million.
In August 2020, Bayer announced it had acquired KaNDy Therapeutics Ltd, helping to boost its female healthcare business, for $425 million. In October, Bayer agreed to acquire Asklepios BioPharmaceuticals for $2 billion upfront.
In June 2021, the company announced it acquire Noria Therapeutics Inc. and PSMA Therapeutics Inc. gaining rights to a number of cancer-based investigational compounds based on actinium-225
Actinium-225 (225Ac, Ac-225) is an isotope of actinium. It undergoes alpha decay to francium-221 with a half-life of 10 days, and is an intermediate decay product in the neptunium series (the decay chain starting at neptunium-237, 237Np). Exc ...
.
Spin off of Covestro
In September 2015, Bayer spun out its $12.3 billion materials science division into a separate, publicly traded company called Covestro in which it retained about a 70% interest. Bayer spun out the division because it had relatively low profit margins compared to its life science divisions (10.2%, compared with 24.9% for the agriculture business and 27.5% for healthcare) and because the business required high levels of investment to maintain its growth, and to more clearly focus its efforts and identity in the life sciences.[Alessi, Christopher (1 September 2015)]
"Bayer Separates Material Science Business Covestro"
''Wall Street Journal''. Covestro shares were first offered on the Frankfurt Stock Exchange
The Frankfurt Stock Exchange (, former German name: , ''FWB'') is the world's 3rd oldest and 12th largest stock exchange by market capitalization. It has operations from 8:00 am to 10:00 pm ( German time).
Organisation
Located in Frankfurt, ...
in October 2015. Effective January 2016 following the spinout of Covestro, Bayer rebranded itself as a life sciences company, and restructured into three divisions and one business unit: Pharmaceuticals, Consumer Health, Crop Science, and Animal Health.[Bayer, 2015 Annual Report]
Corporate Structure
/ref>
Acquisition of Monsanto
In May 2016, Bayer offered to buy U.S. biotechnology company Monsanto
The Monsanto Company () was an American agrochemical and agricultural biotechnology corporation founded in 1901 and headquartered in Creve Coeur, Missouri. Monsanto's best-known product is Roundup, a glyphosate-based herbicide, developed ...
for $62 billion. Shortly after Bayer's offer, Monsanto rejected the acquisition bid, seeking a higher price. In September 2016, Monsanto agreed to a $66 billion offer by Bayer. In order to receive regulatory approval, Bayer agreed to divest a significant amount of its current agricultural assets to BASF
BASF SE (), an initialism of its original name , is a European Multinational corporation, multinational company and the List of largest chemical producers, largest chemical producer in the world. Its headquarters are located in Ludwigshafen, Ge ...
in a series of deals. On 21 March 2018 the deal was approved by the European Union, and it was approved in the United States on 20 May 2018. The sale closed on 7 June 2018. The Monsanto brand was discontinued; its products are now marketed under the Bayer name. On 16 September 2019, under the approval of National Company Law Tribunal, Bayer completed the merger of Monsanto India.
Bayer's Monsanto acquisition is the biggest acquisition by a German company to date. However, owing to ongoing litigation concerning the Monsanto's herbicide Roundup and the massive financial and reputational blows it has caused Bayer, the deal is considered one of the worst corporate mergers in history. By 2023, Bayer's market value had declined by over 60% since its 2016 merger, leaving the company's overall worth at less than half of what it paid to acquire Monsanto.
Acquisition history
*Bayer
**Miles Laboratories
Miles Laboratories (originally the Dr. Miles Medical Company) was a pharmaceutical company founded in Elkhart, Indiana, in 1884 by Dr. Franklin L. Miles, a specialist in the treatment of eye and ear disorders, with an interest in the connection ...
***Miles Canada
**Cutter Laboratories
Cutter Laboratories was a family-owned pharmaceutical company located in Berkeley, California, founded by Edward Ahern Cutter in 1897. Cutter's early products included anthrax vaccine, hog cholera (swine fever) virus, and anti-hog cholera serum� ...
**Hollister-Stier
**Corn King Company
**Plastron Specialties
**Pacific Plastics Company
**Olympic Plastics Company
**Ashe-Lockhart Inc
**Haver-Glover Laboratories
**Sterling Winthrop
** Roche Pharmaceuticals
**Schering AG
Schering AG was a research-centered German multinational pharmaceutical company headquartered in Wedding, Berlin, which operated as an independent company from 1851 to 2006. In 2006, it was bought by Bayer AG and merged to form the Bayer su ...
**Jenapharm
Jenapharm is a pharmaceutical company from Jena, Germany. Founded in 1950 in East Germany, the company focused from the beginning on the production and development of steroids. Because of the economic circumstances of the Eastern Bloc, the company ...
**Bomac Group
**Algeta
**Merck & Co
Merck & Co., Inc. is an American Multinational corporation, multinational pharmaceutical company headquartered in Rahway, New Jersey. The company does business as Merck Sharp & Dohme or MSD outside the United States and Canada. It is one of the ...
**Monsanto
The Monsanto Company () was an American agrochemical and agricultural biotechnology corporation founded in 1901 and headquartered in Creve Coeur, Missouri. Monsanto's best-known product is Roundup, a glyphosate-based herbicide, developed ...
***Emergent Genetics
***Seminis
***Icoria, Inc
***Delta & Pine Land Company
***De Ruiter Seeds
***Agroeste Sementes
***Aly Participacoes Ltda
****CanaVialis S.A.
****Alellyx S.A.
***Divergence, Inc
***Beeologics
***Precision Planting Inc
***Climate Corp
****640 Labs
***Agradis, Inc
***Rosetta Green Ltd
***American Seeds, Inc
****Channel Bio Corp
****Stone Seeds
****Trelay Seeds
****Stewart Seeds
****Fontanelle Hybrids
****Specialty Hybrids
****NC+ Hybrids, Inc
****Diener Seeds
****Sieben Hybrids
****Kruger Seed Company
****Trisler Seed Farms
****Campbell Seed
****Gold Country Seed, Inc
****Heritage Seeds
***International Seed Group, Inc
****Poloni Semences
****Charentais Melon Breeding Company
**BlueRock Therapeutics
**KaNDy Therapeutics Ltd
**Asklepios BioPharmaceutical
**Noria Therapeutics Inc.
**PSMA Therapeutics Inc.
**Vividion Therapeutics
Corporate structure
In 2003, to separate operational and strategic managements, Bayer AG was reorganized into a holding company
A holding company is a company whose primary business is holding a controlling interest in the Security (finance), securities of other companies. A holding company usually does not produce goods or services itself. Its purpose is to own Share ...
. The group's core businesses were transformed into limited companies, each controlled by Bayer AG. These companies were: Bayer CropScience AG; Bayer HealthCare AG; Bayer MaterialScience AG and Bayer Chemicals AG, and the three service limited companies Bayer Technology Services GmbH
(; ) is a type of Juridical person, legal entity in German-speaking countries. It is equivalent to a (Sàrl) in the Romandy, French-speaking region of Switzerland and to a (Sagl) in the Ticino, Italian-speaking region of Switzerland.
It is a ...
, Bayer Business Services GmbH and Bayer Industry Services GmbH & Co. OHG. In 2016, the company began a second restructuring with the aim of allowing it to transition to a life sciences
This list of life sciences comprises the branches of science that involve the scientific study of life – such as microorganisms, plants, and animals including human beings. This science is one of the two major branches of natural science, ...
based company. By divesting its Chemicals division in 2004 and with the aim of off-loading its Materials division by mid-2016, Bayer will be left with the four core units, as depicted below.
Bayer CropScience
Bayer CropScience has products in crop protection (i.e. pesticides
Pesticides are substances that are used to pest control, control pest (organism), pests. They include herbicides, insecticides, nematicides, fungicides, and many others (see table). The most common of these are herbicides, which account for a ...
), nonagricultural pest control, and seeds
In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a ''testa''. More generally, the term "seed" means anything that can be sown, which may include seed and husk or tuber. Seeds are the ...
and plant biotechnology
Biotechnology is a multidisciplinary field that involves the integration of natural sciences and Engineering Science, engineering sciences in order to achieve the application of organisms and parts thereof for products and services. Specialists ...
. In addition to conventional agrochemical business, it is involved in genetic engineering of food. In 2002, Bayer AG acquired Aventis (now part of Sanofi
Sanofi S.A. is a French Multinational corporation, multinational pharmaceutical and healthcare company headquartered in Paris, France. The corporation was established in 1973 and merged with Synthélabo in 1999 to form Sanofi-Synthélabo. In 200 ...
) CropScience and fused it with their own agrochemicals division (Bayer Pflanzenschutz or "Crop Protection") to form Bayer CropScience; the Belgian biotech company Plant Genetic Systems
Plant Genetic Systems (PGS), since 2002 part of Bayer CropScience, is a biotech company located in Ghent, Belgium. The focus of its activities is the genetic engineering of plants. The company is best known for its work in the development of inse ...
became part of Bayer through the Aventis acquisition. Also in 2002, Bayer AG acquired the Dutch seed company Nunhems, which at the time was one of the world's top five seed companies. In 2006, the U.S. Department of Agriculture announced that Bayer CropScience's LibertyLink genetically modified rice had contaminated the U.S. rice supply. Shortly after the public learned of the contamination, the E.U. banned imports of U.S. long-grain rice and the futures price plunged. In April 2010, a Lonoke County, Arkansas jury awarded a dozen farmers $48 million. The case was appealed to the Arkansas Supreme Court, which affirmed the judgement. On 1 July 2011, Bayer CropScience agreed to a global settlement for up to $750 million. In September 2014, the firm announced plans to invest $1 billion in the United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
between 2013 and 2016. A Bayer spokesperson said that the largest investments will be made to expand the production of its herbicide Liberty. Liberty is an alternative to Monsanto's product, Roundup, which are both used to kill weeds.
In 2016, as part of the wholesale corporate restructuring, Bayer CropScience became one of the three major divisions of Bayer AG, reporting directly to the head of the division, Liam Condon. Under the terms of the merger, Bayer promised to maintain Monsanto's more than 9,000 U.S. jobs and add 3,000 new U.S. high-tech positions.
The prospective merger parties said at the time the combined agriculture business planned to spend $16 billion on research and development over the next six years and at least $8 billion on research and development in the United States.
The global headquarters of Bayer CropScience is located in St. Louis
St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a populatio ...
, Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...
, United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
.
Bayer CropScience Limited is the Indian subsidiary of Bayer AG. It is listed on the Indian stock exchanges
A stock exchange, securities exchange, or bourse is an Exchange (organized market), exchange where stockbrokers and stock trader, traders can buy and sell security (finance), securities, such as share (finance), shares of stock, Bond (finance) ...
; the Bombay Stock Exchange
BSE Limited, also known as the Bombay Stock Exchange (BSE), is an Indian stock exchange based in Mumbai. It is the 6th largest stock exchange in the world by total market capitalization, exceeding $5 trillion in May 2024.
Established with t ...
and National Stock Exchange of India
National Stock Exchange of India Limited, also known as the National Stock Exchange (NSE), is an Indian stock exchange based in Mumbai. It is the List of stock exchanges, 5th largest stock exchange in the world by total market capitalization, ...
, and has a market capitalization
Market capitalization, sometimes referred to as market cap, is the total value of a publicly traded company's outstanding common shares owned by stockholders.
Market capitalization is equal to the market price per common share multiplied by ...
of $2 billion. Bayer BioScience, headquartered in Hyderabad, India
Hyderabad is the capital and largest city of the Indian state of Telangana. It occupies on the Deccan Plateau along the banks of the Musi River (India), Musi River, in the northern part of Southern India. With an average altitude of , much ...
, has about 400 employees, and has research, production, and an extensive sales network spread across India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
.
Bayer Consumer Health
Before the 2016 restructuring, Bayer HealthCare comprised a further four subdivisions: Bayer Schering Pharma, Bayer Consumer Care, Bayer Animal Health and Bayer Medical Care. As part of the corporate restructuring, Animal Health was moved into its own business unit, leaving the division with the following categories; Allergy, Analgesics, Cardiovascular Risk Prevention, Cough & Cold, Dermatology, Foot Care, Gastrointestinals, Nutritionals and Sun Care.
Bayer Consumer Care manages Bayer's OTC medicines portfolio. Key products include analgesics such as Bayer Aspirin and Aleve
Naproxen, sold under the brand name Aleve among others, is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, menstrual cramps, and inflammatory diseases such as rheumatoid arthritis, gout and fever. It is taken orally. It i ...
, food supplements Redoxon
Redoxon is the brand name of the first artificially synthesized ascorbic acid (vitamin C). Redoxon was first marketed to the general public by Roche in 1934, making it the first mass-manufactured synthetic vitamin in history. The brand is now ...
and Berocca
Berocca is a brand of effervescent drink and vitamin tablets containing B vitamins and vitamin C, manufactured by Bayer. Berocca was originally established in Switzerland in 1969 by Roche, and is available in a number of countries worldwide.
...
, and skincare products Bepanthen and Bepanthol. Women's healthcare is an example of a General Medicine business unit. Bayer Pharma produces the birth control pills Yaz and Yasmin. Both pills use a newer type of progestin
A progestogen, also referred to as a progestagen, gestagen, or gestogen, is a type of medication which produces effects similar to those of the natural female sex hormone progesterone in the body. A progestin is a '' synthetic'' progestogen. ...
hormone called drospirenone
Drospirenone is a progestin and antiandrogen medication which is used in birth control pills to prevent pregnancy and in menopausal hormone therapy, among other uses. It is available both alone under the brand name Slynd and in combination ...
in combination with estrogen. Yaz is advertised as a treatment for premenstrual dysphoric disorder
Premenstrual dysphoric disorder (PMDD) is a mood disorder characterized by emotional, cognitive, and physical symptoms. PMDD causes significant distress or impairment in menstruating women during the luteal phase of the menstrual cycle. The symp ...
(PMDD) and moderate acne. Other key products include the cancer drug Nexavar
Sorafenib, sold under the brand name Nexavar, is a kinase inhibitor drug approved for the treatment of primary kidney cancer (advanced renal cell carcinoma), advanced primary liver cancer (hepatocellular carcinoma), FLT3-ITD positive AML and ra ...
, the multiple sclerosis drug betaferon
Interferon beta-1b is a cytokine in the interferon family used to treat the relapsing-remitting and secondary-progressive forms of multiple sclerosis (MS). It is approved for use after the first MS event. Closely related is interferon beta 1a, als ...
/ betaseron and the blood-clotting drug, Kogenate
Factor VIII, an essential blood coagulation protein, is used as a medication to treat and prevent bleeding in people with hemophilia A and other causes of low factor VIII. Certain preparations may also be used in those with von Willebran ...
. In May 2014, it was announced that Bayer would buy Merck & Co
Merck & Co., Inc. is an American Multinational corporation, multinational pharmaceutical company headquartered in Rahway, New Jersey. The company does business as Merck Sharp & Dohme or MSD outside the United States and Canada. It is one of the ...
's consumer health care unit for $14.2 billion. Bayer also controls Dihon Pharmaceutical Group Co., Ltd in China.
Bayer Pharmaceuticals
The Pharmaceuticals Division focuses on prescription products, especially for women's healthcare and cardiology
Cardiology () is the study of the heart. Cardiology is a branch of medicine that deals with disorders of the heart and the cardiovascular system. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery di ...
, and also on specialty therapeutics in the areas of oncology
Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer. A medical professional who practices oncology is an ''oncologist''. The name's Etymology, etymological origin is the Greek word ὄγ ...
, hematology
Hematology (American and British English spelling differences#ae and oe, spelled haematology in British English) is the branch of medicine concerned with the study of the cause, prognosis, treatment, and prevention of diseases related to bloo ...
and ophthalmology
Ophthalmology (, ) is the branch of medicine that deals with the diagnosis, treatment, and surgery of eye diseases and disorders.
An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. Following a ...
. The division also comprises the Radiology Business Unit which markets contrast-enhanced diagnostic imaging equipment together with the necessary contrast agents.
In addition to internal R&D, Bayer has participated in public–private partnership
A public–private partnership (PPP, 3P, or P3) is a long-term arrangement between a government and private sectors, private sector institutions.Hodge, G. A and Greve, C. (2007), Public–Private Partnerships: An International Performance Revie ...
s. One example in the area of non-clinical safety assessment is the InnoMed PredTox program. Another is the Innovative Medicines Initiative
The Innovative Medicines Initiative (IMI) is a European initiative to improve the competitive situation of the European Union in the field of pharmaceutical research. The IMI is a joint initiative ( public-private partnership) of the DG Resear ...
of EFPIA
The European Federation of Pharmaceutical Industries and Associations (EFPIA) is a Brussels-based trade association and lobbying organisation, founded in 1978 and representing the pharmaceutical industry operating in Europe. Through its membershi ...
and the European Commission
The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
.
Defunct business units
Bayer Chemicals AG (with the exception of H.C. Starck and Wolff Walsrode) was combined with certain components of the polymers segment to form the new company Lanxess
Lanxess AG is a German specialty chemicals company based in Cologne, Germany. It was founded in 2004 after Bayer AG spun off its chemicals division and parts of its polymers business.
History
The company's roots trace back to 1863, with the fou ...
on 1 July 2004; Lanxess was listed on the Frankfurt Stock Exchange
The Frankfurt Stock Exchange (, former German name: , ''FWB'') is the world's 3rd oldest and 12th largest stock exchange by market capitalization. It has operations from 8:00 am to 10:00 pm ( German time).
Organisation
Located in Frankfurt, ...
in early 2005. Bayer HealthCare's Diagnostics Division was acquired by Siemens Medical Solutions in January 2007.
Bayer sold its Animal Health business to Elanco
Elanco Animal Health Incorporated is an American pharmaceutical company which produces medicines and vaccinations for pets and livestock. Until 2019, the company was a subsidiary of Eli Lilly and Company, before being divested. It is the third-l ...
in 2020.
Bayer Diabetes Care managed Bayer's medical devices portfolio. Key products included the blood glucose monitors Contour Next EZ (XT), Contour, Contour USB and Breeze 2 used in the management of diabetes. The diabetes business unit was sold to Panasonic Healthcare Co. for $1.15 billion in June 2015. Bayer MaterialScience was a supplier of high-tech polymers, and developed solutions for a broad range of applications relevant to everyday life. On 18 September 2014, the Board of Directors of Bayer AG announced plans to float the Bayer MaterialScience business on the stock market as a separate entity. On 1 June 2015, Bayer announced that the new company would be named Covestro; Bayer formally spun out Covestro in September 2015.[
]
Ownership
The 10 largest shareholders of Bayer AG in early 2024 were:
Finances
For the fiscal year 2017, Bayer reported earnings of EUR€7.3 billion, with an annual revenue of EUR€35 billion, a decrease of 25.1% over the previous fiscal cycle. Bayer's shares traded at over €69 per share, and its market capitalization was valued at US€65.4 billion in November 2018. In September 2019, Bayer announced to reduce the number of management board members from seven to five to reduce overall costs.
The key trends of Bayer are (as at the financial year ending December 31):
* without Covestro from 2017 on
Bayer 04 Leverkusen
In 1904, the company founded the sports club TuS 04 ("Turn- und Spielverein der Farbenfabriken vorm. Friedr. Bayer & Co."), later SV Bayer 04 ("Sportvereinigung Bayer 04 Leverkusen"), finally becoming TSV Bayer 04 Leverkusen ("Turn- und Sportverein") in 1984, generally, however, known simply as Bayer 04 Leverkusen
Bayer 04 Leverkusen, officially known as Bayer 04 Leverkusen Fußball GmbH () and commonly known as Bayer Leverkusen or simply Leverkusen, is a German professional association football, football club based in Leverkusen, North Rhine-Westphalia. ...
. The club is best known for its football team, but has been involved in many other sports, including athletics, fencing, team handball, volleyball, boxing, and basketball. TSV Bayer 04 Leverkusen is one of the largest sports clubs in Germany. The company also supports similar clubs at other company sites, including Dormagen (particularly handball), Wuppertal (particularly volleyball), and Krefeld-Uerdingen (featuring another former Bundesliga football club, SC Bayer 05 Uerdingen, now KFC Uerdingen 05
KFC Uerdingen 05 was a German football club in the Uerdingen district of the city of Krefeld, North Rhine-Westphalia. The former Bundesliga side, which had its greatest successes in the 1980s, plays in the fourth-level Regionalliga. In 2025, th ...
).
Awards and recognition
In October 2008, Bayer's Canadian division was named one of "Canada's Top 100 Employers
Canada's Top 100 Employers is an annual editorial competition that recognizes the best places in Canada to work. First held in 1999, the project aims to single out the employers that lead their industries in offering exceptional working condition ...
" by Mediacorp Canada Inc. The Canadian division was named one of Greater Toronto's Top Employers
Canada's Top 100 Employers is an annual editorial competition that recognizes the best places in Canada to work. First held in 1999, the project aims to single out the employers that lead their industries in offering exceptional working condition ...
by the ''Toronto Star'' newspaper. Bayer USA was given a score of 85 (out of 100) in the Human Rights Campaign
The Human Rights Campaign (HRC) is an American LGBTQ advocacy group. It is the largest LGBTQ political lobbying organization within the United States. Based in Washington, D.C., the organization focuses on protecting and expanding rights for L ...
's 2011 Corporate Equality Index
The Corporate Equality Index is a report published by the Human Rights Campaign Foundation as a tool to rate American businesses on their treatment of gay, lesbian, bisexual and transgender employees, consumers and investors. Its primary source of ...
, a measure of gay and lesbian workplace equality.
In 2016, Standard Ethics Aei
Standard Ethics is an independent sustainability reporting rating agency based in London, known for its sustainable finance and ESG (Environmental, Social, Governance) studies. In 2001, it introduced a standardized approach to sustainability r ...
gave a rating to Bayer in order to include the company in its Standard Ethics German Index. Bayer received an EE− rating, the fourth tier in an eight-tier ranking.
Ranked third in Access to Seeds Index in 2016.
Litigation
Roundup
In August 2018, two months after Bayer acquired Monsanto, a U.S. jury ordered Monsanto to pay $289 million to a school groundskeeper who claimed his Non-Hodgkin's lymphoma
Non-Hodgkin lymphoma (NHL), also known as non-Hodgkin's lymphoma, is a group of blood cancers that includes all types of lymphomas except Hodgkin lymphomas. Symptoms include enlarged lymph nodes, fever, night sweats, weight loss, and tire ...
was caused by regularly using Roundup, a glyphosate
Glyphosate (IUPAC name: ''N''-(phosphonomethyl)glycine) is a broad-spectrum systemic herbicide and crop desiccant. It is an organophosphorus compound, specifically a phosphonate, which acts by EPSP inhibitor, inhibiting the plant enzyme 5-en ...
-based herbicide produced by Monsanto. Following the Johnson v. Monsanto Co. verdict, Bayer's share price dropped by around 14% or $14 Billion in market capitalization. The company filed an appeal on 18 September 2018. Pending appeal, the award was later reduced to $78.5 million. In November 2018, Monsanto appealed the judgement, asking an appellate court to consider a motion for a new trial. A verdict on the appeal was delivered in June 2020 upholding the verdict but further reducing the award to $21.5 million. On 13 May 2019, a United States Superior Court Judge ordered Bayer to pay more than $ 2.5 billion in damages to a couple in California, both of whom contracted non-Hodgkin's Lymphoma
Non-Hodgkin lymphoma (NHL), also known as non-Hodgkin's lymphoma, is a group of blood cancers that includes all types of lymphomas except Hodgkin lymphomas. Symptoms include enlarged lymph nodes, fever, night sweats, weight loss, and tire ...
, later cut to $87 million on appeal.
In June 2020, the company agreed to pay $9.6 billion to settle more than 10,000 lawsuits claiming harm from Roundup, saying this action will result in the resolution of 75% of those claims. Bayer will also assign $1.25 billion for future claims, an action that needs approval from the US District Court, Northern District of California. The settlement, according to the company, does not admit either liability or wrongdoing, but brings an end to irresolution in the case. The settlement does not include three cases that have already gone to jury trials and are being appealed. In July 2020, the California Court of Appeals denied the appeal but reduced the damages owed to $20.4 million. As of 2023, around 165,000 claims, more than 50,000 of which still pending, have been made against Roundup, mostly alleging that it had caused cancer.
The general consensus among national regulatory agencies, and the European Commission
The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
is that labeled usage of the herbicide poses no carcinogenic or genotoxic risk to humans. In January 2020, the US Environmental Protection Agency (EPA) finalized its interim registration review for Roundup, stating that it "...did not identify any risks of concern" for cancer and other risks to humans from glyphosate exposure." On 17 June 2022, California-based United States Court of Appeals for the Ninth Circuit
The United States Court of Appeals for the Ninth Circuit (in case citations, 9th Cir.) is the U.S. federal court of appeals that has appellate jurisdiction over the U.S. district courts for the following federal judicial districts:
* Distric ...
ordered the Environmental Protection Agency
Environmental Protection Agency may refer to the following government organizations:
* Environmental Protection Agency (Queensland), Australia
* Environmental Protection Agency (Ghana)
* Environmental Protection Agency (Ireland)
* Environmenta ...
to reexamine this 2020 finding that glyphosate
Glyphosate (IUPAC name: ''N''-(phosphonomethyl)glycine) is a broad-spectrum systemic herbicide and crop desiccant. It is an organophosphorus compound, specifically a phosphonate, which acts by EPSP inhibitor, inhibiting the plant enzyme 5-en ...
did not pose a health risk for people exposed to it by any means.
In 2024, legislation was introduced in Iowa, Missouri and Idaho with language supplied by Bayer that experts say could shield the company from any lawsuits related to cancer risk. Bayer leads a group called Modern Ag Alliance which produces advertisements claiming that lawsuits threaten the availability of glyphosate
Glyphosate (IUPAC name: ''N''-(phosphonomethyl)glycine) is a broad-spectrum systemic herbicide and crop desiccant. It is an organophosphorus compound, specifically a phosphonate, which acts by EPSP inhibitor, inhibiting the plant enzyme 5-en ...
. In 2025, flyers from a dark money
In politics, particularly the politics of the United States, dark money refers to spending to influence elections, public policy, and political discourse, where the source of the money is not disclosed to the public.
In the United States, ...
source were sent to constituents of Missouri senators who oppose the bill, claiming that the lawmakers' opposition would cause "Chinese Communist Party chemicals" to enter the food supply. The targeted senators allege that Bayer is behind the mailers, which Bayer denies.
Xarelto
In 2019, Bayer and Johnson & Johnson (who market Xarelto together) settled around 25,000 lawsuits on the blood thinning drug Xarelto (rivaroxaban) by agreeing to disburse $775 million (US) to federal and state plaintiffs who said the companies had not properly warned patients about possible fatal bleeding as a result of ingesting the drug. There was no admission of liability from the companies in the settlement as they noted they had prevailed in six previous trials. The settlement will be divided evenly between the companies.
One A Day Vitamins
In 2019, a federal jury in San Francisco CA sided with Bayer in a $600 million (US) class action suit alleging that the company misinformed consumers by promoting its One A Day
One A Day (sometimes referred to as One-A-Day) is a product family of multivitamins produced by the Bayer corporation. One A Day was introduced in 1940 by Miles Laboratories.
Bayer markets fifteen products in the One A Day line:
* Cholesterol ...
vitamins as supporting cardiac health, vigorous immune systems and boosting user energy. The suit was first filed as a nationwide class action; in 2017, the US District Court in San Francisco said subclasses of purchasers of the vitamin in Florida, New York, and California could act together.
The jury found that the plaintiffs failed to prove that Bayer misrepresented its One A Day claims, and also did not demonstrate that any of the class representative consumers who purchased One A Day relied on the so-called false information as part of their buying decision.
HIV contamination
In the mid-1980s, when Bayer's Cutter Laboratories
Cutter Laboratories was a family-owned pharmaceutical company located in Berkeley, California, founded by Edward Ahern Cutter in 1897. Cutter's early products included anthrax vaccine, hog cholera (swine fever) virus, and anti-hog cholera serum� ...
realized that their blood products, the clotting
Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood clot. It results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair. The process of coagulation ...
agents Factor VIII
Coagulation factor VIII (Factor VIII, FVIII, also known as anti-hemophilic factor (AHF)) is an essential blood clotting protein. In humans, it is encoded by ''F8'' gene. Defects in this gene result in hemophilia A, an X-linked bleeding disorder ...
and IX, were contaminated with HIV
The human immunodeficiency viruses (HIV) are two species of '' Lentivirus'' (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the im ...
, the financial investment in the product was considered too high to destroy the inventory. Bayer misrepresented the results of its own research and knowingly supplied hemophilia medication tainted with HIV to patients in Asia and Latin America, without the precaution of heat treating the product, recommended for eliminating the risk. As a consequence, thousands who infused the product tested positive for HIV and later developed AIDS
The HIV, human immunodeficiency virus (HIV) is a retrovirus that attacks the immune system. Without treatment, it can lead to a spectrum of conditions including acquired immunodeficiency syndrome (AIDS). It is a Preventive healthcare, pr ...
.
Dicamba
On 14 February 2020, Bayer and BASF were ordered to pay Missouri peach farmer Bill Bader $15 million in damages as a result of destruction of his peach trees which was caused by the usage of dicamba
Dicamba (3,6-dichloro-2-methoxybenzoic acid) is a selective systemic herbicide first registered in 1967. Brand names for formulations of this herbicide include Dianat, Banvel, Diablo, Oracle and Vanquish. This chemical compound is a chlorinat ...
by nearby farmers. Dicamba was another product which Bayer acquired from Monsanto
The Monsanto Company () was an American agrochemical and agricultural biotechnology corporation founded in 1901 and headquartered in Creve Coeur, Missouri. Monsanto's best-known product is Roundup, a glyphosate-based herbicide, developed ...
. Bayer also inherited the lawsuit from Monsanto as well. On 15 February 2020, Bayer—representing Monsanto—and BASF were ordered to pay not only the $15 million in damages, but an additional $250 million in punitive damages
Punitive damages, or exemplary damages, are damages assessed in order to punish the defendant for outrageous conduct and/or to reform or deter the defendant and others from engaging in conduct similar to that which formed the basis of the lawsuit. ...
. Bayer and BASF afterwards announced plans to appeal the $265 million fine.
In June 2020, Bayer agreed to a settlement of up to $400 million for all 2015 to 2020 crop year dicamba claims, not including the $265 million judgement. On 25 November 2020, U.S. District Judge Stephen Limbaugh Jr. reduced the punitive damage amount in the Bader Farms case to $60 million.
PCB pollution
In June 2020, Bayer agreed to pay $800 million to settle lawsuits in a variety of jurisdictions which claimed contamination of public waterways with PCBs
Polychlorinated biphenyls (PCBs) are organochlorine compounds with the formula C12 H10−''x'' Cl''x''; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids f ...
by Monsanto before 1978. On 25 November 2020, however, U.S. District Judge Fernando M. Olguin
Fernando Manzano Olguin (born 1961) is a United States federal judge, United States district judge of the United States District Court for the Central District of California.
Early life and education
Olguin was born in 1961, in Los Angeles. He ...
rejected Bayer's settlement offer, which was now at $650 million, and allowed Monsanto-related lawsuits involving PCB to proceed.
Talc-related liabilities
On 4 April 2023, a Delaware judge dismissed a lawsuit by Merck & Co
Merck & Co., Inc. is an American Multinational corporation, multinational pharmaceutical company headquartered in Rahway, New Jersey. The company does business as Merck Sharp & Dohme or MSD outside the United States and Canada. It is one of the ...
’s seeking to hold Bayer AG responsible for more talc
Talc, or talcum, is a clay mineral composed of hydrated magnesium silicate, with the chemical formula . Talc in powdered form, often combined with corn starch, is used as baby powder. This mineral is used as a thickening agent and lubricant ...
-related liabilities stemming from its $14.2 billion purchase of Merck’s consumer care business in 2014. The judge called Bayer’s interpretation of the purchase agreement “the only reasonable one,” and said letting Merck “dump” cases would give the Rahway, New Jersey–based company an incentive to prolong or stall lawsuits. Bayer said in a statement, it welcomed the decision, and it "will continue to defend itself against any further efforts by Merck to avoid or improperly transfer its liabilities to Bayer”.[ Stempel, J. (APRIL 04, 2023)]
"Bayer defeats Merck in lawsuit over talc liabilities"
''Reuters Healthcare & Pharma''. Accessed 4 April 2023.
See also
* List of German companies
A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but ...
* List of pharmaceutical companies
This listing is limited to those pharmaceutical companies, independent companies and subsidiaries notable enough to have their own articles in Wikipedia. Both going concerns and defunct firms are included, as well as firms that were part of the ...
Notes
References
Works cited
*
*
*
*
*
*
*
*
*
*
:
*
*
*
*
*
*
*
Further reading
*
* Blaschke, Stefan (1999). ''Unternehmen und Gemeinde: Das Bayerwerk im Raum Leverkusen 1891–1914''. Cologne: SH-Verlag.
*
*
*
*
*
* Tenfelde, Klaus (2007). ''Stimmt die Chemie? : Mitbestimmung und Sozialpolitik in der Geschichte des Bayer-Konzerns''. Essen: Klartext.
*
External links
*
*
Product Portfolio
{{Portal bar, Germany, Medicine, Companies
1950s initial public offerings
Agriculture companies of Germany
Aspirin
Biotechnology companies of Germany
Chemical companies of Germany
Companies based in North Rhine-Westphalia
Companies listed on the Frankfurt Stock Exchange
Companies formerly listed on the Tokyo Stock Exchange
Companies in the Euro Stoxx 50
Companies in the DAX index
Companies involved in the Holocaust
Genetic engineering and agriculture
German brands
German companies established in 1863
Health care companies of Germany
IG Farben
Life sciences industry
Leverkusen
Chemical companies established in 1863
Pharmaceutical companies established in 1863
Multinational companies headquartered in Germany
Nanotechnology companies
Pharmaceutical companies of Germany
Antisemitism in Germany