NOW 5-HTP – 5-hydroxytryptophan is an amino acid, which controls anger. When it gets to the brain it turns into serotonin – the substance which controls aggression, appetite, sleep, mood and sexuality. Serotonin is also famous as the happiness hormone and its absence in the body often leads to depressive states and demotivation. 5-HTP is a dietary supplement which will help you control your appetite, will give you the motivation to work out and will contribute to a calm sleep which is also very important for an adequate recovery. Recommended use: One capsule daily, advisably on an empty stomach. For sleep improvement – 1 dose 30 minutes before going to bed