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Swanson Premium

L-Tryptophan

Item: SW1502

In Stock


Swanson $9.49
Retail $14.99
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500 mg 60 Caps

Caps Size: OO, Pill Size Guide

  • L-Tryptophan from Swanson Premium



  • Supports sleep and serotonin levels



  • 500 mg per capsule


Looking for all-natural sleep support? Swanson Premium offers 500 mg of L-Tryptophan per capsule to help support healthy serotonin levels and provide restful sleep. L-Tryptophan, an essential amino acid, has to be obtained in the diet or in supplement form.   Extensive lot tests indicate no Peak-E in this product.

Lee Swanson, President

Risk-Free Purchase Guarantee

If you are dissatisfied for any reason, we'll give you a full refund and pay return shipping. Lee Swanson, President of Swanson Health Products

Product Description:

L-Tryptophan

"...at Swanson you get better products that really work at a very competitive price, and you can not beat the quality, or the price. With the Premium L-Tryptophan you sleep like a baby and wake up refreshed with no problems..." ~product review by Ttod

  • L-Tryptophan from Swanson Premium



  • Supports sleep and serotonin levels



  • 500 mg per capsule


Looking for all-natural sleep support? Swanson Premium offers 500 mg of L-Tryptophan per capsule to help support healthy serotonin levels and provide restful sleep. L-Tryptophan, an essential amino acid, has to be obtained in the diet or in supplement form.   Extensive lot tests indicate no Peak-E in this product.

Product Label:

L-Tryptophan

Supplement Facts

Serving Size 1 Capsule

  Amount Per Serving % Daily Value
L-Tryptophan 500 mg *

*Daily Value not established.

Other ingredients: Gelatin, brown rice flour, may contain one or both of the following: magnesium stearate, silica.

Suggested Use: As a dietary supplement, take one capsule with water 30–60 minutes before sleeping.

WARNING: Do not take this product if you are pregnant or nursing or taking a prescription antidepressant. Consult your healthcare provider before use if you have a medical condition or if you are taking prescription medications.

Terms and Ingredient Definitions

L-Tryptophan

Swanson $9.49
Add To Order

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

Swanson Premium L-Tryptophan Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

L-Tryptophan 4.7 5 39 43
I can finally sleep! I was so excited to see tryptophan back on the market! As long as it's available, I will continue to use this product. December 17, 2014
Seems to help sleep I like that this is available in the 500mg dose. 1000mg is usually overkill for this old boy. If taking it for sleep, I recommend also popping a P5P (coenzymated B6 - Swanson makes a good one) and prepared to hit the rack 30 minutes or so after taking it. September 16, 2014
Made me woozy Does relax you before sleep but also makes you a little woozy the next morning and a bit jittery in the early stages of sleep. August 22, 2014
Great nighttime remedy to help you sleep August 14, 2014
Very Helpful! I have been using this product for the past month and have noticed it works very well! I am always pleased with Swanson and the items they carry! If not I know I can send them back. Great customer service! June 12, 2014
Didn't work for us I purchased this product for my wife. For her it doesn't worked and the side effects was bad as in the next day she apparently felt bad. February 21, 2014
Great Product My husband takes these for sleep and if you price them elsewhere, you will be shocked when you see the price here. Another great product at a great price that I don't have to worry about quality since it's a Swanson's product. February 19, 2014
Title:G'Nite - Sleep Tight! Date:February 16, 2014 "I use this product because I sometimes wake up in the middle of the night and cannot go back to sleep. This formula works well for me and also helps me to drop off to sleep faster." February 16, 2014
Already pruchased for my niece! Has really helped me to feel better. Will always keep some in the cabinet! December 21, 2013
Tryptophan Works well toward relaxing the body but does not put you to sleep December 21, 2013
good product This product really helps me sleep. December 8, 2013
great sleep aid I take it nightly and love it. Use to be a really light sleeper not anymore. I only wake up to the sound of my kids now. December 4, 2013
Really helps Use a couple of these at bedtime to help me sleep soundly. It really works. November 30, 2013
Love it This & some occasional melatonin have really help make a difference in my ability to get to and fall back sleep. October 30, 2013
L-tryptophan this supplement really helps me with sleep and the price is not too bad either. Swanson products have good prices. October 19, 2013
Unbelievable Best product I have ever used for helping me to sleep. Try it, you wont be disappointed. October 5, 2013
Effective Product I bought this product to help with sleep. I take 2 at bedtime and it works very well. This product also helped rid me of my sweets habit. August 28, 2013
I am OUT This product has really helped my poor sleep since I started. When I take this I am OUT. I think I'm actually waking up in the morning in the same position that I've fallen asleep. I would recommend anyone who hasn't taken L-Trypt to try it in smaller doses first, though, to make sure you don't end up in hibernation mode! July 22, 2013
L-Tryptophan-good stuff I've purchased and tried the more expense brands of Tryptophan and this one is just as good as those and a much better value. July 6, 2013
Great product great price I never worry when I order from Swanson, their products and value are right on the money. Remember you pay for what you get but at Swanson you get better products that really work at a very competitive price, and you can not beat the quality, or the price. With the Premium L-Tryptophan you sleep like a baby and wake up refreshed with no problems. I love their products. July 6, 2013
effective i use 3 capsule everynight,all I can say is give it try July 2, 2013
great swanson product Again great stuff, it does what it needs to do at a great price and service. June 27, 2013
Use this When I can't Sleep This is priced lower than other comparables and it really helps you wind down for sleep at bedtime. I take it 30-60 minutes before bedtime-if you wait past an hour the drowsiness may pass! June 20, 2013
great product I have used this product for several months, I will keep using. A natural way to rest, no side effects. June 13, 2013
It works I have trouble sleeping. This product helps me to sleep through the night without any residual effects the next morning. The capsules are a little big for swallowing though. May 30, 2013
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