Ketanserin

Overview
Ketanserin is a serotonin receptor antagonist. It has the highest affinity for the serotonin 5-HT2A receptor, but also binds less potently to the 5-HT2C, 5-HT2B, 5-HT1D, alpha-adrenergic, and dopamine receptors. With tritium radioactively labeled ketanserin is used as a radioligand for the serotonin 5-HT2A receptor, e.g. in receptor binding assays.

Ketanserin was discovered at Janssen Pharmaceutica in 1980.

It is classified as an antihypertensive by the World Health Organization and the National Institute of Health.