http://www.sideeffectsof5htp.com/ - 5-hydroxytryptophan (5-HTP) is an amino acid that occurs naturally in the body and is the final step in the production of the neurotransmitter serotonin, an important chemical that's responsible for many of the brain impulses involving satisfaction and well being. 5-HTP is created through the hydroxylating of Tryptophan. - http://www.sideeffectsof5htp.com/