5-Hydroxytryptophan or 5HTP is a naturally occurring amino acid from which the neurotransmitter serotonin is made. ActiveVits 5HTP capsules contain extract from the Griffonia Seed, using a process that retains as many of the active components of 5HTP as possible. Studies show that 5-HTP may help to promote the brain chemical Serotonin, which acts as a chemical messenger in the brain and is thought to contribute to feelings of wellbeing and happiness, and also may regulate appetite and sleep.