4-HO-MET, or 4-hydroxy-N-methyl-N-ethyltryptamine, is a lesser-known psychedelic drug. It is 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 minimum dosage is listed as 10-20 mg, and the duration listed as 4-6 hours. 4-HO-MET produces psilocin-like distortion of color, sound, and form. These effects occurs in a wavelike pattern such as that of 2C-B. Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-HO-MET.