5-HTP 200mg5 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 healthy serotonin levels.* Serotonin is associated with a positive mood and provides a substrate for the production of melatonin.* This formula includes B vitamins as cofactors, and is further