Gefapixant, sold under the brand name Lyfnua, is a medication used to treat chronic (long-term) cough. It acts as an
antagonist
An antagonist is a character in a story who is presented as the main enemy or rival of the protagonist and is often depicted as a villain.P2RX3
receptor
Receptor may refer to:
* Sensory receptor, in physiology, any neurite structure that, on receiving environmental stimuli, produces an informative nerve impulse
*Receptor (biochemistry), in biochemistry, a protein molecule that receives and respond ...
.
It was authorized for medical use in the European Union in September 2023.
Medical uses
Gefapixant is
indicated
In medicine, an indication is a valid reason to use a certain test, medication, procedure, or surgery. There can be multiple indications to use a procedure or medication. An indication can commonly be confused with the term diagnosis. A diagnosis ...
for the treatment of refractory or unexplained chronic cough.