What is 5-HTP / 5-hydroxytryptophan? 5-HTP / L-5-Hydroxytryptophan is natural extracted from Griffonia simplicifolia seed, the raw material be found principally in the West African countries, mainly in Ghana, Ivory Coast and Togo. Every so often, we add a supplement that, well, we just get excited over. 5-HTP is one of them. Why are we excited? Because this stuff really works to alleviate some truly debilitating problems. 5-HTP, or 5-hydroxytryptophan, is the immediate precursor of serotonin.. where will be 5-htp use to ? • Loss Weight • Improve Sleep Packing Detail Packed in paper-drums and two plastic-bags inside. Net Weight: 25kgs/drum. I.D. 40CmX50CM Storage Situation Stored in a cool and dry well-closed container, keep away from moisture and strong light / heat. Shelf Life two years under well Storage situation and stored away from direct sun light.