5-HTP (5-Hydroxy L-Tryptophan) promotes the body's healthy production of serotonin, an important substance that supports normal nerve and brain function. Serotonin appears to help maintain balanced sleep patterns, moods, weight loss, and the inflammation response system. The human body manufactures 5-HTP from L-tryptophan, a natural amino acid found in many dietary proteins. Supplemental 5-HTP is naturally derived from the seeds of the Griffonia simplicifolia, a West African plant. 5-HTP supports the production of serotonin to help maintain healthy nerve and brain function. Serotonin is found in the brain and central nervous system, and supports balanced mood, behavior, sleep patterns and weight loss.