Nature's Way 5-HTP (l-5-hydroxytryptophan) is a natural extract of Griffonia simplicifolia beans. It has been combined with Vitamin C and Vitamin B-6, an important cofactor in the extract's conversion to seratonin. The tablets are easy to swallow and enteric-coated to minimize any potential gastric discomfort. Usage: 5-HTP is a precursor to seratonin, a mood and appetite regulating neurotransmitter produced within the body. * Recommended Daily Dosage: Use under the guidance of a healthcare practitioner. Start with a low dose of one tablet (50 mg.) taken daily with a meal. Increase the dose slowly (every 3-5 days) up to a maximum of four tablets taken daily (200 mg.) Total daily intake should be divided into two or more doses, with no more than two tablets per dose. The following list is for serving size of 2 tablets Primary Ingredients Amount USRDA L-5 Hydroxytryptophan (griffonia bean extract) 100 mg 0% Vitamin B-6, pyridoxineHCl 20 mg 1000% Vitamin C (ascorbic acid) 120 mg 200% Other Ingredients: Cellulose, Gelatin, Maltodextrin, Silica Usage Warnings: Some may experience gastrointestinal (GI) upset, diarrhea or nausea while taking this product which usually disappears by reducing dosage or is minimized by taking with food. As with any supplement if discomfort continues discontinue use. May cause drowsiness. Should not be consumed by pregnant or lactating women. Those using MAO-inhibitors, antidepressants, and drugs containing fenfluramine should not use 5-HTP. Should not be consumed by children. Those suffering from gut disorders such as ulcers, irritable bowel disease, Crohn's disease, celiac disease, etc. should not use 5-HTP