4-HO-MET (4-hydroxy-N-methyl-N-ethyltryptamine, or metocin, methylcybin, Colour), is a lesser-known psychedelic drug. It is a structural− and functional analog of psilocin as well the 4-hydroxyl analog of MET. 4-HO-MET was first synthesized by Alexander Shulgin. In his book TiHKAL (Tryptamines I Have Known and Loved), the dosage is listed as 10-20 mg. 4-HO-MET produces psilocin-like distortion of color, sound, and form. Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-HO-MET. There have been no reports of deaths from 4-HO-MET, even though people have reported taking doses up to 150 mg, more than an order of magnitude above the effective dose.