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OO, Pill Size Guide
500 mg 60 Caps
  • 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

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

Swanson Premium L-Tryptophan Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

L-Tryptophan 4.8 5 34 38
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
perfect This product does exactly what it promises, could not more satisfied. Will continue to purchase Swanson's Premium L-Tryptophan and the price is right, have purchased this type of product from other vendors and they are more expensive and the quality is lacking. May 27, 2013
Tis Product Changed My Life This product changed my life. So many people have problems sleeping a full 8 hours every night. Not me, I sleep from 10 PM till 7 AM every night: thanks to this product. I would not choose to live without it. I take the recommended amount, not more and not less. Once, I ran out and I was unable to sleep. I did not feel good. On my last order, I bought 7 bottles. I don't want to run out, ever again! May 14, 2013
Magnificent Product This product is not excellent it is magnificent. The value and quality are superb and the shipping service received from Swansom is excellent. I highly recommend it. April 28, 2013
good product I have tried several sleep help products. Most of them worked good for me BUT left me feeling out of touch and groggy in the AM. This natural product works good for me and I wake up refreshed and ready to start my day. April 23, 2013
Good supplement My friend Mike who likes nothing loves it and says it works well for him. April 16, 2013
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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

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