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L-Tryptophan - 500 mg, 90 Veg Caps

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L-Tryptophan supports restful sleep, healthy moods, metabolism, digestion, and immune response. It may also help reduce carbohydrate cravings.

Capsule Size: 6C
List Price: $21.95
Our Price: $10.97

Availability: Usually Ships in 1 to 2 Business Days

Description Supplement Facts


  • Eases cravings for carbohydrates.
  • Supports restful sleep, healthy moods and fortifies immune response.
  • Supports a healthy nervous system and circulation.

Product Information

L-Tryptophan is an essential amino acid (meaning the body cannot produce it on its own). Dietary sources of L-Tryptophan include egg whites, cod, pumpkin seeds, cheese, turkey, pork, and milk.

L-Tryptophan is a protein building block that supports healthy moods, relaxation, and restful sleep. It also plays a key role in the body's synthesis of melatonin and serotonin—hormones involved in mood and stress response. In addition, as a precursor to the kynurenines that regulate the body's immune response, L-Tryptophan supports the body's immune functions. As required by the body, L-tryptophan also converts to niacin and thus supports a healthy nervous system and circulation, as well as the body’s metabolism.

L-tryptophan also aids in the production of hydrochloric acid used by digestive system for the effective breakdown of food. It may also reduce carbohydrate cravings and is supportive as an aid in maintaining a healthy weight.


  • Keep out of reach of children.
  • If you are pregnant or breast feeding, consult your health care professional before using this product.
  • People with known medical conditions and/or taking drugs or anti-anxiety or anti-stress medications within the last 90 days, should consult with a licensed physician and/or pharmacist prior to taking any dietary supplements.
  • Before using l-tryptophan, talk to your doctor, pharmacist, herbalist, or other healthcare provider if you have or have had: liver disease; eosinophilia-myalgia syndrome or EMS—(high levels of a certain type of white blood cells); or a muscle disorder (such as fibromyalgia)

  • Tired Turkey Syndrome - If you've ever gotten particularly tired after eating turkey, it may be as a result of natural tryptophan found in turkey.
  • Smoking Cessation - Some programs now utilize L-Tryptophan, under medical supervision, as an additional aid to cutting cravings for cigarettes.

  • Average Customer Review: 4 of 5 Total Reviews: 13 Write a review.

      1 of 1 people found the following review helpful:
    good for a relaxed sleep January 22, 2016
    Reviewer: Anonymous Person from Ithaca, NY United States  
    Have tried many other sleep aids, both Rx and "natural" .  Tryptophan has been very helpful and a good price.

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      0 of 0 people found the following review helpful:
    L-Tryptophan September 22, 2014
    Reviewer: Paul W. from Metairie, LA United States  
    I mix this in our morning shake and gives us an additional boost.

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      0 of 0 people found the following review helpful:
    L-Tryptophan - 500 mg, 90 Veg Caps January 23, 2014
    Reviewer: Anonymous Person from Calgary, AB Canada  
    Excellent value, fast shipping.

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      1 of 1 people found the following review helpful:
    best price around! January 23, 2014
    Reviewer: Karen R. from Salt Lake City, UT United States  
    This has changed my life.  This amino acid, found in turkey, helps me get to sleep.  I take two every night about 45 minutes before bedtime.  As a therapist, I suggest it to my clients for insomnia.

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      0 of 0 people found the following review helpful:
    not sure it works very well January 16, 2014
    Reviewer: Janice L. from Louisville, KY United States  
    I bought some L-tryptophan from the health food store andit sseemed to work great but I haven't gotten the same results from this product

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