L-5-hydroxytryptophan (5-HTP) is an amino acid that the body makes from tryptophan. It can also be extracted from seeds of the Griffonia simplicifolia plant and taken as a dietary supplement.

NOW Supplements, 5-HTP (5-hydroxytryptophan) 200 mg, Double Strength, Neurotransmitter Support*, 120 Veg Capsules If you are looking for a natural supplement to support positive mood and sleep ...

5-HTP is a powerful, natural supplement that supports serotonin production, making it beneficial for mood enhancement, anxiety relief, and better sleep quality. A meta-analysis published in ...

If you’re not sleeping soundly, could taking a couple of simple supplements help to overhaul your energy and mood? Experts say yes – so here’s everything you need to know about 5-HTP and ...

National University of Singapore (NUS) nutritionists have found that 5-Hydroxytryptophan (5-HTP) supplementation can improve sleep quality in Singaporean older adults, particularly in individuals ...