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Source Naturals L-Tryptophan

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

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

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Supplement Facts
Serving Size: 3 Capsules
Servings per Container: 40
Amount Per Serving% Daily Value
Iron (naturally occuring)575 mcg3%
L-Tryptophan1.5 g*
*Daily value not established.
Other Ingredients: Gelatin (capsule), microcrystalline cellulose, dibasic calcium phosphate, colloidal silicon dioxide, and magnesium stearate.
If you are pregnant, breastfeeding, may become pregnant, or are taking medications such as SSRI's or MAOI's, 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-TRYPOTOPHAN is extremely pure and is regularly tested to ensure the highest standards of quality.


1 capsule 3 times daily, between means and preferably with fruit juice. To support restful sleep, take 3 capsules before bed.
Free Of
Yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, artificial color, flavor and 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 Capsules 4.8 5 10 19
Helps me sleep through the night I am 46 years old and very active (kickboxing, trailrunning and more) and had trouble (despite my physical tiredness) staying asleep. Melatonin didn't matter how high of a dose I took. Now that I found out about L-Tryptophan...I take 3 capsules with some water right before bedtime and don't wake up anymore until my alarm goes off. I wake up refreshed and ready for the day. April 2, 2015
recommended I started taking L-Tryptophan and glutamine before bedtime. I seem to sleep more 'efficiently' ( sleep approximately the same amount of time as before) but wake up with more energy that before I took them. September 10, 2014
Dosage Accuracy Have tried many different brands of tryptophan, others are weak. Source Naturals (500 mg. caps) and Now (1000 mg. tablets) are reliable in regard to dose. October 19, 2013
Works great I used tryptophan years ago. Then they took it off the market. I am so glad it is back. I have tried lots of other products for sleep and this one works for me. I am an insomniac and this is a safe way to quickly fall asleep. No hangover feeling the next day. I trust this brand. It is gluten free and that is essential for me. June 15, 2013
Good sleep aid I use 2 capsules at night before bed. great to help relaxing. April 18, 2013
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Source Naturals L-Tryptophan
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