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Source Naturals

L-Tryptophan with Vitamin B-6

Item | SN568

$28.34
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Supplement Facts

Serving Size 1 Tablet

  Amount Per Serving %Daily Value
Vitamin B-6 (as pyridoxine HCl) 20 mg 1,000%
Iron (naturally occurring) 390 mcg 2%
L-Tryptophan 1 g

†Daily Value not established.

Other ingredients: microcrystalline cellulose, stearic acid, modified cellulose gum, and silica.

Suggested Use: 1 tablet 1 to 2 times daily, between meals and preferably with fruit juice. To support restful sleep, take 2 tablets before bed.

CAUTION: If you are pregnant, may become pregnant, breastfeeding, or are taking medications such as SSRIs or MAOIs, consult your health care professional before using this product. This product may cause drowsiness.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

STORE IN A COOL, DRY PLACE.

  • Suitable for vegans, vegetarians and HYPOALLERGENIC; Contains no yeast, dairy, egg, gluten, corn, soy or wheat.
  • Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
  • Helps support relaxation and restful sleep



  • Combines l-tryptophan with vitamin B-6



  • Vegan friendly


Source Naturals L-Tryptophan features the precursor for the synthesis of melatonin and serotonin, which help the body regulate mood and stress response. Also helps support restful sleep, relaxation and a positive outlook. Vitamin B-6 is needed by the body to convert l-tryptophan into serotonin. Contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Terms and Ingredient Definitions

Shipping Weight: .24 lbs

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: $39.98

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.

Rated 5 out of 5 by from L_tryptophan wih b6 it is good to have both togoether we do nto have to take the b6 on the side as it should be done with L_tryptophan
Date published: 2015-10-10
Rated 5 out of 5 by from Integral Part of my Sleep Plan In bumping up from 500 mg to 1000mg, I can appreciate an improvement in my ability to fall asleep. My naturopath recommended this as an important ingredient in my sleep initiation plan.
Date published: 2015-08-14
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Swanson Health started in 1969 in Fargo, ND with a mission to offer pure and potent health products at a great value. Nearly 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 nearly 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.

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