<unk>  is the pharmacologically active agent in the body after ingestion of psilocybin or some species of psychedelic mushrooms. Psilocybin is rapidly dephosphorylated in the body to<unk>  which acts as a 5-HT2A, 5-HT2C and 5-HT1A agonist or partial agonist.<unk>  exhibits functional selectivity in that it activates phospholipase A2 instead of activating phospholipase C as the endogenous ligand serotonin does.<unk>  is structurally similar to serotonin (5-HT), differing only by the hydroxyl group being on the 4-position rather than the 5 and the dimethyl groups on the nitrogen. Its effects are thought to come from its agonist activity at 5-HT2A serotonin receptors in the prefrontal cortex.<unk>  has no significant effect on dopamine receptors (unlike LSD) and only affects the noradrenergic system at very high dosages.<unk> 's half-life ranges from 1 to 3 hours.
Psilocin
Oxytocin 
Oxytocin
Progestogen
Progestogen 
Prolene
Antigonadotropin
Progonadotropin