NOW L-Tryptophan - 500 mg - 120 Veg Capsules

100% of 100
In stock

Benefits and Results:

  • Supports Relaxation †
  • Encourages Positive Mood †
  • Promotes Restful Sleep †
Frequently Bought Together
  • Total price

NOW L-Tryptophan - 500 mg - 120 VCaps - Amino Acids

What Is NOW L-Tryptophan?

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.

Natural color variation may occur in this product.

  • Soy Free
  • Non-GMO
  • Vegan/Vegetarian
  • Nut Free
  • Made w/o Gluten
  • Dairy Free
  • Egg Free
  • Halal
  • Kosher


L-Tryptophan - 1 g (1,000 mg)

How Do I Take NOW L-Tryptophan?

Directions and Dosages:

Take 1-2 capsules 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician.

What's In NOW L-Tryptophan?

Supplement Facts / Label (Varies Product to Product):

NOW L-Tryptophan Supplement Facts

Warnings and Side Effects:

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. Store in a cool, dry place after opening.


PLEASE NOTE: Product images represent the product offered but may not contain exact attributes. Please read the product description for the specific attributes of this product.

†PLEASE NOTE: The intention of the information above is for reference only. It is our goal to maintain and display accurate information. Yet, we can't guarantee it represents the latest formulation of the product. If you have any concerns, please visit the manufacturer's website. The information above is not a representation of our views at Same Day Supplements. These are the views and information provided by the product's manufacturer. The Food and Drug Administration has not evaluated these statements. The intention of this product is not to diagnose, treat, cure or prevent any disease or illness.

*Prices are subject to change at any time and items may limit to stock on hand.


In-stock orders placed before 3pm EST ship out the same day.

We offer many shipping options to countries like:
  • Brazil
  • United Kingdom
  • Canada
  • Germany
  • Australia
  • Japan
  • India
  • France
  • Israel
  • Worldwide
More Information
SKU NOW-0085
Weight 0.3200
Manufacturer NOW Foods
UPC 733739001672
Only registered users can write questions. Please Sign in or Create an account
You have no approved questions.
Customer Reviews
  1. It works!!
    Overall Product Review
    I have been using this product for sleep for years and it always works. I take 2 of them along with calcium and magnesium and off to sleep I go.

    Review by Grace B

    Posted on

  2. I feel like superwoman!
    Overall Product Review
    I was previously prescribed a low dosage antidepressant for anxiety and OCD. Been taking Tryptophan for a couple months now and I feel great overall. It doesn't feel like just a fix, I actually feel better! I joke that I feel like superwoman on my new supplements, but I feel such a difference.

    Review by Nicole D

    Posted on

2 Item(s)

Show per page
Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account
California Residents Only!
warning California Proposition 65 WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to