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Source Naturals L-Tryptophan

Source Naturals L-Tryptophan -- 500 mg - 120 Tablets

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Source Naturals L-Tryptophan -- 500 mg - 120 Tablets

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Supplement Facts
Serving Size: 3 Tablets
Servings per Container: 40
Amount Per Serving% Daily Value
Calcium52 mg5%
L-Tryptophan1.5 g*
*Daily value not established.
Other Ingredients: Dibasic calcium phosphate, stearic acid, modified cellulose gum, and colloidal silicon dioxide.
If you are pregnant, breastfeeding, may become pregnant or are taking medications such as SSRIs or MAOIs, consult your health care professional before using this product.

Source Naturals L-Tryptophan Description

Mood, Relaxation, Sleep

The essential amino acid L-Tryptophan helps support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate 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.
Suitable for vegetarians and hypoallergenic.


1 tablet 3 times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 tablets before bed.
Free Of
Yeast, dairy, egg, gluten, corn, soy or wheat, sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.
Source Naturals L-Tryptophan -- 500 mg - 120 Tablets 5 5 5 5
Helps you get to sleep. I just take one or two at bedtime, and conk out like a light. I have to get up in the middle of the night to take medicine, turn on the light etc. and my sleep is disrupted. So I take another one at this time if I'm not able to sleep. I usually fall back to sleep fairly quickly. Very good product. No side effects for me. Happy with Vitacost's service all the way around. April 23, 2015
perfect to get more out of your nights This is a great product. You can feel it within an hour after take. It relaxes the body in a very natural way. I used to wake up from time to time feeling very grumpy and low energy. Not anymore. Even if there might be some interruptions within the night, I get more rest during the moments of deep sleep. April 14, 2014
Great Product I have trouble sleeping. Used this product years ago until it was taken off the market by our government. It's back and better than ever. I use it every night, twenty minutes before I go to bed. I sleep the whole night through. I wouldn't be without it. June 2, 2012
About time After nearly 20 years of not being able to get L-tryptophan in this country I am delighted and surprised that it is available again. So far I am happy with this product and am sleeping better. I also take a B complex vitamin along with the L-tryptophan because many years my Dr. said it helps aid in the production of serotonin. August 2, 2010
good product It is easy to swallow caplet form. I've noticed that I'm sleeping better and my overall mood has improved October 29, 2008
1-5 of 5
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Frequently Bought Together:
Source Naturals L-Tryptophan
Hyland's Calms Forte Sleep Aid

Retail price together: $52.74

Vitacost price: $28.29

You Save: 46%