Natural amino acid supplement providing 100 mg of 5-hydroxytryptophan per 1-capsule serving. What is 5-HTP? 5-Hydroxytryptophan or 5-HTP is an amino acid that converts to serotonin in the body. Serotonin is a substance that acts as a neurotransmitter or chemical that helps relay signals from one area of the brain to another.  . How does 5-HTP support health?  5-HTP can elevate levels of serotonin which is associated with good mood in humans.*.  5-HTP can increase a sense of well-being.*. Why choose Vitacost 5-HTP?  Delivers 100 mg of 5-HTP per 1-capsule serving.  Also supplies 1000% of the Daily Value for vitamin B6.  Contains 120 servings per bottle.  Great value. About Vitacost. All Vitacost products are laboratory tested to meet FDA standards for identity purity and composition. All products are tested for heavy metals microbiology and contaminants. Vitacost products are produced in a NSF Certified facility. Freshness is guaranteed.  .  . *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.