5-HTP is 5-hydroxytryptophan, a metabolite of tryptophan, and an essential precursor of serotonin and melatonin in the body. Each capsule provides 50mg of 5HTP making it easy to adjust intake for those that prefer to use different levels as the need arises. Note: This product is not intended to diagnose, treat, cure, or prevent any disease, nor should supplements be used as a substitute for a balanced diet. Not intended for pregnant/breastfeeding mothers or children under 18. Do not exceed the recommended dose.