Supplementation with 5-HTP encourages brain serotonin levels that can lead to positive effects on emotional well-being, appetite control, and wake/sleep cycles.5-Hydroxytryptophan (5-HTP) is an intermediate in the natural synthesis of the essential amino acid, tryptophan, to serotonin. Clinical studies suggest that 5-HTP supports healthy serotonin levels. In the body, 5-HTP converts to serotonin with the enzymatic removal of a carboxyl group (COOH). Serotonin is an important neurotransmitter involved in the regulation of endocrine and brain activity responsible for emotion, appetite and sleep/wake cycles.5-HTP is derived from the Griffonia simplicifolia plant. Hypo-allergenic plant fiber is derived from pine cellulose.SUGGESTED USAGEPure Encapsulations recommends 50-300 mg per day, in divided doses, before meals.INGREDIENTSEach vegetable capsule contains:5-hydroxytryptophan50 mg. (Griffonia simplicifolia)other ingredients: hypoallergenic plant fiber (cellulose), vegetarian capsule (cellulose, water)WARNINGSNot to be taken by pregnant or lactating women. 5-HTP may cause gastrointestinal upset in sensitive individuals.Do not use concurrently with SSRI medications or MAO inhibitors.