What is 5-HTP?5-Hydroxytryptophan or 5HTP is a naturally occurring amino acid from which the neurotransmitter serotonin is made. Healthspark 5-HTP capsules contain extracts from the Griffonia Seed a West African Plant, using a specially developed process that retains as much of the active components of 5-HTP as possible. What Does 5-HTP Do?5-HTP may help to maintain a normal mood & healthy nervous system. May help to increase serotonin levels.