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Source Naturals

L-Tryptophan with Coenzyme B-6

L-Tryptophan with Coenzyme B-6

Item: SN818

  • Promotes healthy and restful sleep

  • Vitamin B6 helps convert tryptophan into serotonin

  • 500 mg of l-tryptophan per tablet

500 mg 120 Tabs

Retail $43.50
Save 48%
In Stock
  • Promotes healthy and restful sleep

  • Vitamin B6 helps convert tryptophan into serotonin

  • 500 mg of l-tryptophan per tablet

Source Naturals L-Tryptophan with Coenzyme B-6 supports relaxation, restful sleep and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep/wake cycles. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed, it also converts to niacin in the body, which supports circulation, a healthy nervous system, the metabolism of food, and the production of hydrochloric acid for the digestive system. Coenzyme B-6 is required to convert tryptophan to serotonin.

Terms and Ingredient Definitions

Supplement Facts

Serving Size 3 Tablets

Servings Per Container 40

  Amount Per Serving %Daily Value
Vitamin B-6 (from 13 mg of 9 mg 450%
pyridoxal-5'-phosphate [Coenzymated™])    
Calcium 60 mg 6%
L-Tryptophan 1.5 g

†Daily Value not established.

Other ingredients: dibasic calcium phosphate, stearic acid, modified cellulose gum, and silica.

Suggested Use: 1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 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.


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

Shipping Weight

.25 lbs

Source Naturals L-Tryptophan with Coenzyme B-6 Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Why Shop Swanson® Brands?

"With my personal 100% money-back satisfaction guarantee, you have nothing to lose and great savings to gain."

Lee Swanson, Founder of Swanson Health Products

Risk-Free Purchase Guarantee on Source Naturals L-Tryptophan with Coenzyme B-6

If you are dissatisfied for any reason, we'll give you a full refund and pay return shipping.

Swanson's Standards

We are dedicated to offering the highest quality products at the best price. Find out more about how we ensure such a high standard in everything we do.

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500 mg 120 Tabs

500 mg 60 Tabs

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