say it is close to DMT =) Psilocybin (pronounced /ˌsɪləˈsaɪbɪn/ SIL-ə-SY-bin ; also known as psilocybine or 4-PO-DMT ) is a prodrug for the classical hallucinogen compound psilocin , or 4-HO-DMT (4-hydroxyl-dimethyltryptamine), the active metabolite of psilocybin, responsible for the psychoactive effects of the drug. Both drugs are members of the