This article relies largely or entirely on a single source. (December 2017)
Thiomescaline (TM) is a pair of lesser-known psychedelic drugs with the molecular formula C11H17NO2S. 3-TM and 4-TM are analogs of mescaline in which an oxygen atom has been replaced with a sulfur atom. They were first synthesized by Alexander Shulgin and described in his book PiHKAL. Very little data exists on the pharmacological properties, metabolism, and toxicity of thiomescaline.
Dosage: 60–100 mg
Duration: 8–12 hours
Dosage: 20–40 mg
Duration: 10–15 hours
Effects: LSD-like imagery and effects