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NOW Foods


3.4 out of 5 (5)


Item: NWF768

  • Supports relaxation and restful sleep

  • Pharmaceutical grade (USP)

  • Encourages positive mood

  • Vegetarian product

2 oz Pwdr

Retail $33.99
In Stock
  • Supports relaxation and restful sleep

  • Pharmaceutical grade (USP)

  • Encourages positive mood

  • Vegetarian product
An essential amino acid, L-tryptophan is important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW L-Tryptophan is pharmaceutically pure--every lot is tested to be free of Peak E and microbial contamination.

Terms and Ingredient Definitions

Supplement Facts

Serving Size Two ¼ Level Teaspoons (1.0 g)

Servings Per Container: 57

  Amount Per Serving % Daily Value
L-Tryptophan (Free-Form) 950 mg

†Daily Value not established.

Other Ingredient: Cellulose.

Suggested usage: As a dietary supplement, take one or two ¼ level teaspoons 2 to 3 times daily on an empty stomach or as directed by a healthcare professional. Best used at bedtime. Consider taking this product in combination with NOW® Inositol and Magnesium.

WARNING: Keep out of reach of children. Pregnant/lactating women, those taking anti-depressant medications (such as SSRI’s or MAOI’s) or those with liver disorders, consult a healthcare professional before using this product. May cause drowsiness.

Contains no sugar, salt, yeast, wheat, gluten, soy, milk, egg, shellfish or preservatives.

Vegetarian/Vegan Product.

Shipping Weight

.21 lbs

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Rated 3.4 out of 5 by 5 reviewers.
Rated 5 out of 5 by Glad to find this powder Yes, this powder is somewhat bitter, as other reviewers mentioned, but it is a lot less bitter than another brand I was using. I think that is just the taste of L-Tryptophan. I am grateful to find the reasonable price of this product, since Tryptophan tends to be pricey and I am glad to be able to take it without all the fillers. June 10, 2015
Rated 3 out of 5 by A Taste Disappointment I expected to use this powder in water for larger tryptophan doses per day. I have tasted glucosamine sulfate, which is pleasant as a powder, but the tryptophane powder is rather bitter, and I think I will throw away the bottle. September 16, 2013
Rated 1 out of 5 by buy the pills not the powder very disappointed with the powder. doesn't mix well with water, clumpy, tastes awful. I got the powder hoping it would absorb faster, but it is quite unpleasant to take in this form. buy pills instead! May 27, 2012
Rated 4 out of 5 by Good product I bought this Tryptophan to help me sleep. It was more economical to buy the powder than pills. However, I never feel like I'm able to get a consistent dose. But it does help me sleep. I'll order this again. April 3, 2012
  • 2016-05-23 T13:18:13.232-05:00
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1-5 of 5

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