Serotonin 5-HT2A receptor agonist
A serotonin 5-HT2A receptor agonist, or simply 5-HT2A agonist, is a drug which acts as an agonist of the serotonin 5-HT2A receptor. The serotonin 5-HT2A receptor is one of 13 known human serotonin receptors.
Source: Wikipedia — Serotonin 5-HT2A receptor agonist (CC BY-SA 4.0)