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Now Foods, L-Tryptophan Powder, 2 oz (57 g)

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$14.88 (44)
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In Stock
  • Expiration Date: Mar 2018
  • Shipping Weight: 0.24 lbs (0.11 kg)
  • Product Code: NOW-00263
  • UPC Code: 733739002631
  • Package Quantity: 2 oz (57 g)
  • Dimensions: 2.3 x 2.3 x 4.3 in, 0.2 lbs (0.09 kg)
Product Overview


  • Supports Relaxation
  • Premium Grade
  • Encourages Positive Mood
  • Promotes Restful Sleep
  • GMP Quality Assured
  • A Dietary Supplement
  • Vegetarian/Vegan

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.

Suggested Use

As a dietary supplement, take one or two 1/4 level teaspoons 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician.

Other Ingredients


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.


This product is sold by weight not volume.

Caution: Do not eat freshness packet enclosed.

Store in a cool, dry place after opening.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication (especially antidepressants such as SSRIs and MAOIs), or have a medical condition. May cause drowsiness. Do not use with alcoholic beverages or while operating heavy machinery. Keep out of reach of children.

Supplement Facts
Serving Size: Two 1/4 Level Teaspoons (1 g)
Servings Per Container: 57
  Amount Per Serving % Daily Value
L-Tryptophan (Free-Form) 950 mg *
* Daily Value not established.
iHerb Customer Reviews

Now tryptophan works

Posted by Gibbly on Sep 14, 2016

Now tryptophan works As advertised.

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L-Tryptophan Powder

Posted by Reviewer2811084 on Feb 21, 2016

love this product and it works.

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Horrible Taste

Posted by 4677091529337824012 on Nov 19, 2014

This stuff tastes horrible!! However it does seem to work - one dose at night for sleep and moods.

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tastes horrible!

Posted by 5536595171908109527 on Mar 27, 2014

Doesnt mix well and tastes awful. Much better to take pills

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Posted by Reviewer2065993 on Dec 13, 2013


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