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(5-Hydroxytryptophan)Natural SourceSupports a Positive MoodNon-GMOA Dietary SupplementVegetarian/VeganHow It Works: 5-HTP is the intermediate precursor in the natural synthesis of serotonin a neurotransmitter that helps to regulate mood appetite and sleep/wake cycles. 5-HTP readily crosses the blood-brain barrier and clinical studies suggest that 5-HTP can support health serotonin levels. Serotonin is associated with positive mood and provides a substrate for the production of melatonin. 5-HTP is extracted from the bean of the African plant Griffonia simplicifolia a natural vegetable source.