Dietary Supplement. Promotes Nervous System Health* 5-HTP is a precursor to serotonin, a neurotransmitter involved in sending messages through the nervous system. This formula also includes B vitamins to promote nervous system health and the herb Valerian.* No Artificial Color, Flavors or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.