Psilocin and Psilocybin are the main psychoactive compounds in magic mushrooms. The active dose of psilocin is 2-20 mg. The effects are psychotomimetic and psilocin is considered a psychedelic drug. Duration: 4-7 hours. Chemically speaking psilocin is a tryptamine and an alkaloid. Other chemical names for psilocin are: 4-HO-DMT , TRYPTAMINE , 4-HYDROXY-N,N-DIMETHYL . It is believed that after taking, psilocybin is easily converted into psilocin . See also mushrooms ,LSD , mescaline and chemical psychedelics .