100% Customer Satisfaction Guarantee

America's #1 Rated Catalog/Internet Merchant
Based on Customer Satisfaction

Source Naturals

L-Tryptophan

Swanson $7.49
Retail $11.98 Save 37%
Add To Order
Add to Favorites

Recently Viewed Items

Look here for an easy way to
navigate to your previously
viewed products.

Item:
SN465
Availability:
In Stock
Size:
500 mg 30 Caps
  • Support a healthy mood



  • Promote healthy sleep



  • 30 capsules


The essential amino acid L-tryptophan helps support restful sleep, a positive mood and overall well-being. It plays a part in the synthesis of both melatonin and serotonin, hormones involved in the stress response and regulation of sleep/wake cycles. Source Naturals L-Tryptophan delivers 1.5 grams per serving.

Product Label

Supplement Facts

Serving Size 3 Capsules

Servings Per Container 10

  Amount Per Serving %Daily Value
Iron (naturally occurring) 575 mcg 3%
L-Tryptophan 1.5 g

†Daily Value not established.

Other ingredients: gelatin (capsule), dibasic calcium phosphate, microcrystalline cellulose, silica, and magnesium stearate.

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

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.

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.

Terms and Ingredient Definitions

Source Naturals L-Tryptophan Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

7 Leaf Guarantee

Swanson’s 7-Leaf Guarantee

Earning your trust is our first
and only priority.

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

Top of Page