Doctor's Best 5-HTP provides a drug-free support for sleep?? mood?? anxiety and stress</br>5-HTP aids serotonin production;  Serotonin is the chemical neurotransmitter produced in the brain that helps regulate sleep?? body temperature?? sexual desire?? mood and appetite</br>Synthesis of serotonin in the brain requires an adequate supply of either tryptophan or 5-HTP as precursors in the central nervous system</br>Non-GMO?? Gluten Free?? Vegan</br></br>Product Description</br></br>5-HTP (5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. 5-HTP is converted in the brain to serotonin?? a neurotransmitter substance found at the junctions (synapses) between neurons. 5-HTP is extracted from the seeds of the Griffonia simplicifolia plant.*</br><br/>http://www.amazon.com/gp/product/B000M0F8FU