Nutritional Supplements » Source Naturals »Source Naturals L-Tryptophan 500mg, 120 Capsules

1. Essential amino acid that helps support mood, relaxation, and restful sleep
2. Plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response
3. Supports immune functions, as the body's precursor to the kynurenines that regulate immunity
4. Extremely pure and regularly tested to ensure the highest standards of quality
5. Promotes drowsiness and good quality sleep in cases of mild insomnia and tryptophan