No Thanks

Your 10% Off Promo Code is on the Way! Thanks for signing up for emails.

You're now signed up to receive exclusive deals and savings opportunities!

Thanks again for connecting with us. Keep an eye on your inbox — your first coupon is on its way!

Thank You! This email address is already signed up

You are signed up for the following:

  • Offers
  • Recipes
  • E-Newsletter
  • Updates & Reminders

Thank you for your interest and be assured that you will continue to receive our emails at this address.

Look for your next communication from us within the next week.

Oops!

We are having trouble processing your request.

Our apologies!

Please try again later.

We're experiencing heightened wait times for customer support, deliveries & product availability.  Read our response to COVID-19.

NOW Foods

L-Tryptophan Powder

Item | NWF768

  • Supports relaxation and restful sleep



  • Pharmaceutical grade (USP)



  • Encourages positive mood



  • Vegetarian/vegan formula


$19.27
Qty
Size
2 oz Pwdr

Customers Also Viewed

Supplement Facts

Serving Size Two ¼ Level Teaspoons (approx. 1 g)

Servings Per Container about 57

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

* Daily Value not established.

Other ingredient: Cellulose.

Suggested Usage: Take one or two ¼ level teaspoons 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication (especially anti-depressant (such as SSRI's or MAOI's), 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.

Do Not Eat Freshness Packet. Keep in Bottle.

This product is sold by weight not volume.

Store in a cool, dry place after opening.

  • Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
  • Produced in a GMP facility that processes other ingredients containing these allergens.
  • GMP QUALITY ASSURED
  • Non-GMO
  • Vegetarian/Vegan
  • Recyclable Bottle.
  • Supports relaxation and restful sleep



  • Pharmaceutical grade (USP)



  • Encourages positive mood



  • Vegetarian/vegan formula


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 Powder is pharmaceutically pure--every lot is tested to be free of Peak E and microbial contamination.

Terms and Ingredient Definitions

Shipping Weight: .20 lbs

Vegan
Non-GMO

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.

MSRP: $33.99

For our website and catalog, the MSRP is the "Manufacturer's Suggested Retail Price." The MSRP is understood to mean the price at which a manufacturer will recommend a retailer sell a product for in stores, on the internet, or in catalogs. The MSRP of National brand items are dictated to Swanson by each manufacturer. For Swanson brand items, the MSRP is calculated based on a varying percentage above the product's base price.

Disclaimer: Product reviews are provided for informational purposes only. The information or opinions expressed therein are solely those of the contributors and do not necessarily represent those of Swanson Health Products and its employees. Please read full product reviews disclaimer.
1-5 of 7 reviews
sort by: 
Works well
I take this in the middle of the night to help me fall back into lala land. I use about 1/2 t of this and about 1t of Swanson inositol powder.. Before bed I mix them in a small container. When I wake up in the middle of the night I dump them directly into the gullet and chase with water.
Quality: 5.0 / 5.0
Value: 5.0 / 5.0
Effectiveness: 5.0 / 5.0
Convenience: 4.0 / 5.0
Satisfaction: 5.0 / 5.0
Helpful?
helpful for sleep
I've used l-tryptophan for many years and much prefer this newer powder form than the caps. It's on my nightstand so it is handy when I have interrupted nights. I put a small amount of water on a tablespoon with 1/8 to 1/4 teaspoon of the product. No mixing or stirring - just a good drink of water and soon I'm back to sleep.
Quality: 5.0 / 5.0
Value: 4.0 / 5.0
Effectiveness: 4.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 5.0 / 5.0
Helpful?
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.
Quality: 5.0 / 5.0
Value: 4.0 / 5.0
Effectiveness: 5.0 / 5.0
Convenience: 4.0 / 5.0
Satisfaction: 5.0 / 5.0
Helpful?
Quality: 4.0 / 5.0
Value: 4.0 / 5.0
Effectiveness: 4.0 / 5.0
Convenience: 4.0 / 5.0
Satisfaction: 4.0 / 5.0
Helpful?
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.
Quality: 3.0 / 5.0
Value: 2.0 / 5.0
Effectiveness: 2.0 / 5.0
Convenience: 5.0 / 5.0
Satisfaction: 1.0 / 5.0
Helpful?

Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Over 50 years later, we continue to innovate science-backed vitamins and supplements, delivering wellness solutions that help people live simply healthier together, and find vitality at any age. Click here to learn more about us.

For over 50 years, Swanson Health's research and development team has delivered science-backed health and wellness products to people around the world. Our innovation is guided by clinical research, scientific consensus, emerging research and usage traditions, creating products that help you find vitality at any age. At Swanson, we don't hide our science behind proprietary formulas — we believe in easy-to-read, transparent labelling. What's printed on our labels, is exactly what you'll find in our products.

Swanson Health's purity and potency testing begins with our ingredient sourcing, continues through manufacturing, and goes beyond when a product hits the shelf. Our testing exceeds industry standards, ensuring each product meets our quality guarantees for purity and potency. Swanson facilities are Good Manufacturing Practices (GMP) certified, and we voluntarily participate in third-party, independent laboratory testing. With Swanson, you can be sure you're getting the most pure and potent health products at a great value. Click here to learn more about our quality standards.

®

Easy Refill

  • Get your favorite products delivered automatically
  • 10% off future orders of Swanson brand products in your subscription
  • FREE standard shipping on all future orders over $50
  • Control the frequency, delivery date, item quantity... or cancel at any time
  • Email reminders before each delivery
See all FAQs here