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
Take 1-2 capsules 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician
Packaged in the USA by a family owned and operated company since 1968.
Is Discontinued By Manufacturer : No
Product Dimensions : 2.25 x 2.25 x 4.38 inches; 2.4 ounces
Item model number : 0166
Department : Health and Beauty>Health and Wellness
Date First Available : October 11, 2007
Manufacturer : NOW Sports – Nutrition and Wellness
Best Sellers Rank: #9,107 in Health & Household (See Top 100 in Health & Household)
#81 in Sleep & Snoring Aids
#99 in Herbal & Nutritional Sleep Supplements
#1,014 in Sales & Deals
Customer Reviews:
4.6 4.6 out of 5 stars(5,626)
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. Natural color variation may occur in this product.
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