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Now Foods, L-Tryptophan, 500 mg, 120 Veggie Caps

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In Stock
  • Expiration Date: Sep 2018
  • Shipping Weight: 0.35 lbs
  • Product Code: NOW-00167
  • UPC Code: 733739001672
  • Package Quantity: 120 Veggie Caps
  • Dimensions: 4.6 x 2.7 x 2.7 in, 0.3 lbs
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 1-2 capsules 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician. Consider taking these other NOW products: Inositol and Magnesium.

Other Ingredients

Cellulose (capsule), cellulose powder and stearic acid (vegetable source).

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.


Store in a cool, dry place after opening after opening.

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 beverage or while operating heavy machinery. Keep out of reach of children.

Do not eat freshness packet. Keep in bottle.

Supplement Facts
Serving Size: 2 Veg Capsules
Servings Per Container: 60
  Amount Per Serving % Daily Value
L-Tryptophan (Free-Form) 1.0 g (1,000 mg) *
* Daily Value not established.
iHerb Customer Reviews

L-Tryptophan for dementia

Posted by Reviewer3071038 on Jan 07, 2017

This product seems to calm dementia patients, at least this is the feedback I have had from the health care team at my mother's nursing home.

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Posted by 5692994360781621916 on Dec 15, 2016

This is my second time ordering this. I use it for sleep and it works great.

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Buena calidad

Posted by 5025003748559590362 on Dec 13, 2016

Tomar triptófano regularmente produce efectos beneficiosos en el estado anímico general.

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helps to relax

Posted by 4999552043609988259 on Dec 01, 2016

it does what it exactly says on the information label...it helps to relax and be calm through out the day, especially when taken in the morning, the work at the job is being done more calm and relaxed.

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I like that

Posted by 5052033665171120786 on Nov 06, 2016

I want it one more time to buy

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