- Double Strength
- Premium Grade
- Encourages Positive Mood
- Promotes Restful Sleep*
L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. L-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 contamination. NOW® Double Strength L-Tryptophan has twice the L-Tryptophan (1000 mg per tablet) as in our regular strength product (500 mg per capsule).
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.