5-HTP (5-hydroxytryptophan) is a precursor to the neurotransmitter serotonin. Serotonin is found in the brain, blood platelets and cells of the gastrointestinal tract and has many implications in cognition, mental health and sleep patterns.**
Supplementation with 5-HTP has shown an ability to increase serotonin levels and consequently support healthy sleep patterns, and improve mood.