NOW Foods L-Tryptophan 500 mg, Supports Relaxation*, Encourages Positive Mood*, 120 Veg Capsules

Features:
 An essential amino acid that is not synthesized by the body and must be obtained by diet or supplementation.
 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 tested to be free of Peak E and microbial contamination.
 GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
 Packaged in the USA by a family owned and operated company since 1968.