Nutricost L-Tryptophan 500mg, 120 Capsules - with BioPerine, Gluten Free, Non-GMO

L-Tryptophan is a great source of this essential amino acid in an easy-to-take form. Each capsule contains 500mg of L-Tryptophan so you only have to take 1 capsule for a full serving. Nutricost’s L-Tryptophan only uses the best, high-quality L-Tryptophan. In addition, Nutricost’s L-Tryptophan is made in a GMP Compliant, FDA Registered Facility and undergoes testing by independent, ISO-accredited laboratories.