Cymarin (or cymarine) is a

cardiac glycoside Cardiac glycosides are a class of organic compounds that increase the output force of the heart and decrease its rate of contractions by inhibiting the cellular sodium-potassium ATPase pump. Their beneficial medical uses include treatments for ...

. Plants of the genus ''

Apocynum ''Apocynum'', commonly known as dogbane or Indian hemp, is a small genus of the flowering plant family Apocynaceae. Its name comes from Ancient Greek , from ''apo-'' "away" and ''kyōn'' "dog", referring to dogbane ('' Cionura erecta''), which ...

'', including ''

Apocynum cannabinum ''Apocynum cannabinum'' (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, hemp dogsbane, rheumatism root, dogsbane, or wild cotton) is a perennial herbaceous plant that grows throughout much of North America—in the southern hal ...

'' and ''

Apocynum venetum ''Apocynum venetum'', commonly known as sword-leaf dogbane, is a plant species in the dogbane family that is poisonous but used as a source of fiber, medicine, and nectar for production of honey. Distribution and habitat ''Apocynum venetum'' is ...

'', contain cymarin. Cymarin is a cardiac glycoside and an anti-

arrhythmia Arrhythmias, also known as cardiac arrhythmias, are irregularities in the cardiac cycle, heartbeat, including when it is too fast or too slow. Essentially, this is anything but normal sinus rhythm. A resting heart rate that is too fast – ab ...

and

cardiotonic A cardiac stimulant is a drug which acts as a stimulant of the heart – e.g., via Chronotropic#Positive chronotropes, positive chronotropic action (increased heart rate) and/or Inotrope#Positive inotropic agents, inotropic action (increased myocar ...

agent.

References

External links

* Cardenolides {{cardiovascular-drug-stub