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4-HO-MET

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4-HO-MET

4-HO-MET, also known as 4-hydroxy-N-methyl-N-ethyltryptamine, as well as metocin or methylcybin, is a psychedelic drug of the tryptamine and 4-hydroxytryptamine families related to psilocin (4-HO-DMT). It is taken orally.

The drug acts as a non-selective serotonin receptor agonist, including of the serotonin 5-HT2A receptor. It is a close structural analogue of psilocin (4-HO-DMT) and is the 4-hydroxyl analogue of methylethyltryptamine (MET).

4-HO-MET was discovered by Alexander Shulgin in the 1970s. It was first described in the literature by David Repke and colleagues in 1981. The drug was encountered as a novel recreational and designer drug by 2008.

In his book TiHKAL (Tryptamines I Have Known and Loved), Alexander Shulgin lists the dose range as 10 to 20 mg orally and its duration as 4 to 6 hours. However, a wider recreational dosage range of 2 to 45 mg or more, with a dose estimate of 15 mg, has also been reported. Its onset is within 30 minutes.

The effects of 4-HO-MET have been reported to include pupil dilation, euphoria, tingling sensations, perceptual changes, closed- and open-eye visuals, synesthesia, time dilation, intensified perceptions, thoughts, and feelings, and a general change in thought processes. Other specific effects include alteration of color and form, feeling sounds, and a wave-like experience with alternation between near-normal perception one moment and a "swirl of altered concept" the next moment.

4-HO-MET is said to produce qualitative effects very similar to those of psilocin. Shulgin has stated that he doubts it could be distinguished from psilocin in any blinded clinical study. However, the drug has also been described as being relatively or very light, more clear-headed and functional, and having less head space. On the other hand, it is said to still produce strong psychedelic visuals. This has been described as being analogous to the case of 2C-B.

In addition to its use on its own, 4-HO-MET, along with the related tryptamine psychedelic 5-MeO-MiPT, is employed as a component of the MDMA-mimicking Borax combo.

4-HO-MET binds to various serotonin receptors and is known to act as an agonist of the serotonin 5-HT2A, 5-HT2B, 5-HT2C, and 5-HT1A receptors. It is thought that the hallucinogenic effects of serotonergic psychedelics like 4-HO-MET are mediated by serotonin 5-HT2A receptor activation.

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