Tags: Chemical Compound, Chemical Substance.
5-Hydroxytryptophan (5-HTP) also known as oxitriptan (INN) is a naturally occurring amino acid and chemical precursor as well as a metabolic intermediate in the biosynthesis of the neurotransmitters serotonin and melatonin from tryptophan.5-HTP is sold over the counter in the United Kingdom Australia the United States and Canada as a dietary supplement for use as an antidepressant appetite suppressant and sleep aid and is also marketed in many European countries for the indication of major depression under trade names like Cincofarm Levothym Levotonine Oxyfan Telesol Tript-OH and Triptum.