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90 reviews
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What Is L-Tryptophan?

L-Tryptophan is an essential amino acid that is famous for its high levels in turkey. It is used in the biosynthesis of proteins and is found in meats, especially poultry.

L-Tryptophan Benefits

L-Tryptophan is most famous for its ability to support healthy sleep, but it may also promote a calm mood, aid memory, and help in maintaining healthy weight when taken in conjunction with a healthy diet & exercise.

  • Aid sleep
  • Promote a calm mood and feeling of well-being
  • Work to aid memory
  • Assist in maintaining healthy weight when taken in conjunction with a healthy diet & exercise

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Supplement Facts
Servings Size 500 mg
Servings Per Container: -
Amount Per Capsule % Daily Value
L-Tryptophan 500 mg *
*Daily Value not established.
Other Ingredients: None
Free of: Added sugar, soy, dairy, yeast, gluten, and additives

Suggested Use: As a dietary supplement, take 500 mg up to three times daily or as directed by physician.


Due to varying import regulations, not all of our supplements are available to international customers. This product is restricted for sale in the following countries:

  • Australia
  • Austria
  • Germany
  • Italy
  • Netherlands
  • New Zealand
  • Norway
  • Sweden
Customer Reviews
5.0 Based on 90 Reviews
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A Customer
Erica L.
United States United States
Just like thanksgiving

Works great. No issues with taste. Falling asleep 30-45 minutes after taking it.

Victor H.
Canada Canada
Good Tryptophan

I wasn't sure of the quality since the price was so good.But so far so good,it works well. Thanx

United States United States
Great item.

A very good item, the taste is not good, but helps me sleep.

B B.
United States United States

Helps me get to sleep.

Zorra Farland-St.Hael
United States United States
Excellent Product~Great for Relaxing and Next Day Mood Boost

I started using L-Tryptophan about 6 months ago because I read that it was good for sleep support, and also, for depression. I have this product to be very useful on both counts. It will definitely knock you out, calm your nerves, and make the next day a little brighter. In general, it improves sleep quality, as well as quality of life. I noticed the difference when I ran out. It is very effective. I am currently using 3 grams daily, and I have read that I can use as much as 6 grams daily, but 3.5 grams made me groggy the next day. Tolerance increases over time, but not drastically. It tastes like ****; very, very bitter. I have mixed it with pudding, which almost hides the taste. Lately, I have just been making capsules, but I highly recommend buying a capsule machine, which I don’t have. I use 00 capsules and I can only get them to hold about 600 mg. It is a very fluffy powder.

John B.
United States United States
Bulk Supplements' L-Tryptophan is Very Good Product

The use of this L-Tryptophan improves my nightly sleep. With it in powder form, it is easy to digest.