
- Now Foods L-tryptophan 500mg, Veg-Capsules, 240-Count
-
Amazon
From $39.73 (3rd Party New)

From $39.73 (3rd Party New)

| Latest | $39.73 Apr 13, '16 |
| Highest | $39.74 Dec 7, '15 |
| Lowest | $39.73 Mar 15, '16 |
| Average | $39.73 (30d avg) $39.74 (90d avg) $39.74 (180d avg) $39.74 (Lifetime average) |
| Added | Aug 8, 2015 |
30 day average: 141,100
90 day average: 152,446
Supports Relaxation Pharmaceutical Grade (USP) Encourages Positive Mood Promotes Restful Sleep Vegetarian Formula L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination.