5-HTP (5-hydroxytryptophan) is a naturally occurring chemical found in the body, it is made by the amino acid tryptophan. It is a building block for serotonin which it converts to in the brain, serotonin is a chemical messenger between nerve cells. There are many health benefits associated with serotonin, especially related to brain function issues. It can help improve the symptoms of anxiety, sleep disorders, hyperactive disorders, depression, migraines and psychiatric conditions. As well as brain function 5-HTP serotonin can also act as an appetite suppressant which can help with weight loss.