tom (psychedelic) tom (psychedelic) tom, or methylthio-methyl-methoxyamphetamine, is a series of lesser-known psychedelic drugs and substituted amphetamines with the molecular formula c12h19nos. 2-tom and 5-tom are the 2- and 5-methylthio analogs of 2,5-dimethoxy-4-methylamphetamine (dom), respectively. they were first synthesized by alexander shulgin and described in his book pihkal. very little is known about their dangers or toxicity. 2-tom 2-tom, or 5-methoxy-4-methyl-2-methylthio-amphetamine dosage: 60–100 mg duration: 8–10 hours effects: strong closed-eye visuals upon listening to music 5-tom 5-tom, or 2-methoxy-4-methyl-5-methylthio-amphetamine dosage: 30–50 mg duration: 6–10 hours effects: open and closed-eye visuals, psychedelia, hallucinations