Swanson Ultra

AjiPure L-Tryptophan 100% Pure, Pharmaceutical Grade

Swanson $19.99

Item #: SWU372
Availability: In Stock
500 mg 90 Veg Caps
Veg Caps size = OO*, Pill Size Guide

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  • An effective, natural sleep support supplement

  • 100% pure, pharmaceutical quality from a vegetarian source

  • Promotes healthy serotonin levels

It's back, and better than ever! L-Tryptophan is a precursor to serotonin, and it's powerfully effective when used properly. By supporting serotonin levels, L-tryptophan not only helps us fall asleep and stay asleep, but it also promotes mental health and provides dietary support against nervousness and tension. TryptoPure L-Tryptophan from Swanson Ultra is the purest pharmaceutical-grade tryptophan on the world market. It's produced through a natural fermentation process from a vegetarian source, using the most precise standards for safety and quality assurance.

Supplement Facts

Serving Size 1 Veggie Capsule

  Amount Per Serving % Daily Value
Ajinomoto TryptoPure® L-Tryptophan (100% pure pharmaceutical grade L-tryptophan) 500 MG *

*Daily Value not established.

Other ingredients: 100% pure vegetable source cellulose (vegetable capsule).

Suggested Use: As a dietary supplement, take one veggie capsule with water 30–60 minutes before sleeping. For maximum benefit, take two veggie capsules.

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

AjiPure® and TryptoPure® are registered trademarks of Ajinomoto Co., Inc.

Terms and Ingredient Definitions

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

AjiPure L-Tryptophan 100% Pure, Pharmaceutical Grade 4.5 5 43 53
Great product. Easy to purchase, always on time. December 27, 2010
great product for the price very effective....over all mood improvement November 2, 2010
Heavenly sleep This L-Tryptophan is very effective in promoting sleep and staying asleep. October 2, 2010
your best product to date I have recommended this L-Tryptophan to many friends and family with great results every time. Much better nights sleep. Gary October 2, 2010
The best!! At times I have a difficult time falling asleep or staying asleep the entire night. Taking 2 Tryptophan before bed helps me tremendously!! I fall asleep within 30 minutes and sleep all night. When I wake up in the morning, there are no after effects and I'm ready to get up. This is by far the best I have tried to help with sleep. September 13, 2010
great for sleeping this product is fabulous for sleep. i take 2 and sleep very well, i only wake up once or twice and go right back to sleep July 24, 2010
Excellent product This has yet to be the best sleeping aid ever. The price is reasonable and this product actually works for me very well. I haven't felt so calm, relaxed in a long time. May 19, 2010
A Must Have in Any Household This additive free, pharmaceutically pure serotonin precursor has made my habit of obsessing over minutiae a thing of the past. Swanson, I can't thank you enough for this exceptionally priced product! May 1, 2010
i love this i have to get up at 300am to go to work and its hard to go to sleep early. this product really helps me to get a good nights sleep. i only take it the nights before i have to go to work the next morning. February 25, 2010
L=tryptophan excellent product. All my family use this on a daily basis. January 26, 2010
Still Awake and Waiting So far after 3 weeks I haven't seen any results from taking one tablet at bedtime. I'll start taking two and see if that helps. January 25, 2010
Gentle sleep aid Having been a poor sleeper since birth, I have tried many different supplements in hopes of improving my sleep. L-Tryptophan ranks among the best (Valerian is okay also but I prefer L-Tryptophan). 1-2 capsules 30-60 minutes before bedtime relaxes me and makes me naturally sleepy (as long as I am not doing anything too energetic). If I wake in the middle of the night and cannot fall back asleep, I can take another capsule without feeling groggy in the morning. Great stuff. January 23, 2010
catch some zzzz's I find I wake less frequently during the night with this product. Since I have to take two of them, it is a little costly. But I couldn't be without it, so definitely worth the price. January 13, 2010
This is a good product I think it does help with mood and to rest better at night. I notice a disruption in these things when I am not taking it. January 1, 2010
Helps me get to sleep Tryptophan has helped me get to sleep and what a boon that is. AjiPure has some of the best amino acids on the market and that is what Swanson sells. December 31, 2009
wonderful I love this product. For the first time in years, I get a whole nights sleep. Thank you so much. December 11, 2009
An excellent product that has proven its effectiveness time and again. November 20, 2009
Great product I appreciate all the information that is provided about a product so you know what you are purchasing and what to expect when taking it. I have used L-tryptophan for several years now and it is a wonderful supplement. Not only does it support getting a better nights sleep, it is a mood elevator for during the day. We older people need all the support we can get ~ I am 70 y/o ~ and loving life! November 14, 2009
Wide awake I'll just say this... when I used TryptoPure it did help me sleep but only for a short time. Which means that for me, the TryptoPure wasn't effective because it was as if I hadn't slept and I was wide awake. November 12, 2009
Did nothing for me Pros: Quality ingredient. I read about AjiPure and they appear to be a high quality manufacture. Great Price, Great Value Cons: I took 2 capsules for few nights in a row. I bought it to help with sleep but I felt nothing from it. Others have said they did, so i doubt it is quality. I probably just don't respond to Tryptophan. Although i had no response to it, I would still recommend the product because it the quality is high, value is good and it may work for someone else October 14, 2009
Side effects This product seemed to help with sleep but caused me serious side effects, such as dry mouth, muscle pain, shortness of breath, and chest pain. I suppose such reactions would not affect everyone, but I returned the product. September 27, 2009
Satisfied and sleep well I have read about this product for years and wanted to try it. It has not been available for a while, but Other herbs can be taken to help regulate your available natural tryptopan. Taking troptophan is really a good way to get the rest I wanted and a bit more joy in life. I can't say that I expected to be more joyful, but I did hope to sleep better. I am rested and have more energy too. I really like adding this to the vitamins and herbs I take already. It makes a noticeable difference. I only take it at night now because my body relaxes and feels sleepy fairly quickly after taken. I allow about 45 minutes before I want to go to bed. I sleep much deeper and awaken rested in the a.m. August 23, 2009
100% Pure Pharmaceutical Grade AjiPure L-Tryptopha What a wonderful sleep night after night. 2 caps right before bedtime. I add 2 tablets of Schiff's Melatonin Plus. This combo gives me the rest that I have needed for such a long time. I now fall asleep 30-45 min after taking. I now wake up refreshed and full of energy. This is a must try!! August 12, 2009
good product bought to help me sleep. love it. July 31, 2009
Great Product We have a mentally handicapped daughter and she goes through periods of not sleeping. This Swanson Tryptophan is wonderful. She sleeps well now after being on it for over a month. We also give the Swanson Taurine supplement with it. Do make sure you give a little juice or carbohydrate like a cracker with it as that helps to deliver it to the brain. These amino acids are wonderful. July 29, 2009
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