Chewable Neurotransmitter Support with Natural Citrus Flavors. Supports Positive Mood. A Dietary Supplement. Vegetarian - Vegan. Kosher. Amino Acids. Family Owned since 1968. GMP Quality Assured. 5-HTP, the intermediate metabolite between the amino acid tryptophan and serotonin, is extracted from the seed of an African plant (Griffonia simplicifolia).