NOW Foods, L-Tryptophan, 1,000 mg, 60 Tablets

Supports Relaxation Encourages Positive Mood Promotes Restful Sleep Non-GMO A Dietary Supplement Double Strength Vegetarian/Vegan Kosher Amino Acids Family Owned Since 1968 GMP Quality Assured Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function. Every lot of NOW® L-Tryptophan is tested to be free of peak E and microbial combination.