Skip to content


Orders placed Mon-Sat by 12pm PST will ship the same day.
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.

  • May aid sleep
  • May promote a calm mood and feeling of well-being
  • May work to aid memory
  • May 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
Supplement Facts
Serving size: 500 mg
Serving per container: *
Amount Per Serving % Daily Value**
L-Tryptophan 500 mg *
* Daily Value not established.
** Based on 2,000 calorie diet


Sugar, soy, dairy, yeast, gluten, corn and additives.

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 83 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Sherri F.
United States United States
I recommend this product
Bulk Tryptophan

I followed a previous reviewer’s recommendation re: the combination of tryptophan, collagen, and tart cherry with a sweetener (I use monk fruit). I’m experiencing much better sleep. The reviewer started with 4 grams of tryptophan; I use 3/4 tsp., and that works for me.

John B.
United States United States
I recommend this product
Wonderful product for sleep and calming nerves

This is a good product which has helped me increase my serotonin level to allow me to sleep and eliminate shaking in the hands.

Great sleep aid

Aging makes sleep more difficult. This really helped me sleep.


It helps setup sleep quite well within an hour of ingestion

Real good.

The quality of the Tryptophan is high, better than expected. The price is low and the service. fast and professional. I recommend both the Tryptophan and