$4.99 Free Standard Shipping Only on Orders $50+ See Details
Free Shipping Icon

X

All

Shop Specialties

Source Naturals

L-Tryptophan

Item: SN347

Unavailable From Manufacturer

Swanson $21.03
Retail $39.98
Save 47%

Unavailable From Manufacturer
Email Me When Available

50 grams Pwdr

  • Helps support relaxation, restful sleep, and positive mood

  • Plays a part in the synthesis of both melatonin and serotonin

  • Supports immune functions

The essential amino acid l-tryptophan helps support 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 promote immunity. If needed, l-tryptophan 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. Source Naturals l-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.

This formula is suitable for vegetarians and is hypoallergenic. It contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Why Shop Swanson® Brands?

"With my personal 100% money-back satisfaction guarantee, you have nothing to lose and great savings to gain." Lee Swanson, President of Swanson Health Products

Watch now to learn more

Product Description:

L-Tryptophan

  • Helps support relaxation, restful sleep, and positive mood

  • Plays a part in the synthesis of both melatonin and serotonin

  • Supports immune functions

The essential amino acid l-tryptophan helps support 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 promote immunity. If needed, l-tryptophan 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. Source Naturals l-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality.

This formula is suitable for vegetarians and is hypoallergenic. It contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Product Label:

L-Tryptophan

Supplement Facts

Serving Size ¾ Teaspoon (approx. 1.5 g)

Servings Per Container 33

  Amount Per Serving % Daily Value
L-Tryptophan 1.5 g

†Daily Value not established.

Suggested Use: ¼ teaspoon three times daily, between meals and preferably with fruit juice. To support restful sleep, take ¾ teaspoon before bed.

CAUTION: If you are pregnant, may become pregnant, breastfeeding, or are taking medications such as SSRI’s or MAOI’s consult our healthcare professional before using this product. 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 $21.03

Unavailable From Manufacturer
Email Me When Available

Shipping Restrictions

We're sorry; this item is only available for shipment in the United States.

More information on shipping restrictions

Source Naturals L-Tryptophan Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Rated 5 out of 5 by 2 reviewers.
Rated 5 out of 5 by Free of additives I take different amino acids and, whenever I find one that is a pure powder, I use it instead of capsules. I take a lot of supplements and do not want to be ingesting all the additives. Be aware that, because this is only the powder (no sweetener added), it is rather bitter, so if you only like sweet tasting or good tasting supplements, you may want to add this to something that masks the taste. I feel tryptophan helps me sleep. August 1, 2014
  • 2016-02-11 T05:40:42.673-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_2, tr_2
  • loc_en_US, sid_SN347, prod, sort_default
1-2 of 2
close popup
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.

Feedback