Is this synthetic tryptamine truly indistinguishable from the active compound in magic mushrooms?
In short: Discovered in the 1970s, 4-HO-MET is a structural cousin to psilocin that produces strikingly similar psychedelic effects. While some users report a clearer, more functional headspace, experts like Alexander Shulgin have questioned whether it could even be identified in a blinded clinical trial. It remains a complex, evolving legal puzzle.
Known as metocin or methylcybin, 4-HO-MET is a substituted tryptamine belonging to the 4-hydroxytryptamine family. Chemically, it functions as a non-selective serotonin receptor agonist, primarily targeting the 5-HT2A receptor, which is believed to mediate its hallucinogenic properties. Its structure is closely related to psilocin (4-HO-DMT), the active component in psilocybin mushrooms, with the primary difference being the substitution of an ethyl group for a methyl group. This similarity leads to a subjective experience often described as a wave-like alternation between near-normal perception and intense, altered concepts.
The substance was first synthesized by Alexander Shulgin during the 1970s, though it did not appear in scientific literature until David Repke and his colleagues described it in 1981. In his 1997 book, TiHKAL, Shulgin noted that the compound is remarkably similar to other ethyl homologues. Users typically report a dose range of 10 to 20 mg, with effects lasting between 4 and 6 hours. Reported experiences include synesthesia, time dilation, and vivid visual distortions, yet it is frequently characterized as being more 'light' or manageable than psilocin, drawing comparisons to the profile of 2C-B.
The legal status of 4-HO-MET varies drastically across jurisdictions, reflecting the challenges of regulating designer drugs. While it is not federally scheduled in the United States, it may face scrutiny under the Federal Analogue Act due to its relationship with psilocin, and it is explicitly banned in states like South Dakota and West Virginia. Internationally, it is classified as a Class A drug in the United Kingdom, and it has been subject to specific bans in Germany since 2019 and Sweden since 2012. As of 2025, it remains unscheduled in Canada, highlighting the fragmented global approach to emerging psychoactive substances.
Beyond its recreational use, 4-HO-MET is sometimes utilized in the 'Borax combo,' a mixture designed to mimic the effects of MDMA. Despite its prevalence in designer drug markets since 2008, research into its metabolism remains limited, with in vitro studies identifying twelve potential metabolites. Whether it will ever be formally distinguished from its natural counterparts in clinical settings remains a subject of ongoing debate among researchers and enthusiasts alike.
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