2019-6-23 · Cannabis (Marijuana) is a popular psychoactive plant that is often used medically and recreationally. The psychoactive substance in Cannabis, THC, is unique in that it contains no nitrogen and is not an indole, tryptamine, phenethylamine, anticholinergic (deliriant), or a dissociative drug. Cannabis plants tend to vary, with different strains producing dynamic balances of cannabinoids (THC ...