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Source Naturals

L-Tryptophan

Item: SN388

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Swanson $11.21
Retail $21.98
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500 mg 60 Tabs

  • Suitable for vegetarians and hypoallergenic



  • 1.5 grams per serving



  • An essential amino acid for mood, relaxation and sleep support


Get 1.5 grams of L-tryptophan with each serving of Source Naturals L-Tryptophan dietary supplement. It is an essential amino acid that supports mood, relaxation and healthy sleep. L-tryptophan plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. It also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity.

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Product Description:

L-Tryptophan

  • Suitable for vegetarians and hypoallergenic



  • 1.5 grams per serving



  • An essential amino acid for mood, relaxation and sleep support


Get 1.5 grams of L-tryptophan with each serving of Source Naturals L-Tryptophan dietary supplement. It is an essential amino acid that supports mood, relaxation and healthy sleep. L-tryptophan plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. It also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity.

Product Label:

L-Tryptophan

Supplement Facts

Serving Size 3 Tablets

Servings Per Container 20

  Amount Per Serving %Daily Value
Calcium 52 mg 5%
Iron (naturally occurring) 570 mcg 3%
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.

STORE IN A COOL, DRY PLACE.

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

  • Suitable for 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.

Terms and Ingredient Definitions

L-Tryptophan

Swanson $11.21
Add To Cart

Shipping Restrictions

Countries with restrictions on this product:

  • Canada

More information on shipping restrictions

States with restrictions on this product:

  • Alberta
  • British Columbia
  • Manitoba
  • New Brunswick
  • New Foundland
  • Northwest Territory
  • Nova Scotia
  • Nunavut
  • Ontario
  • Prince Edward Island
  • Quebec
  • Saskatchewan
  • Yukon Territory

More information on shipping restrictions

Source Naturals L-Tryptophan Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

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