Best By: September 2026
- Date First Available: May 2007
- Product Code: SNS-01980
- UPC Code: 021078019800
- Package Quantity: 120 Count
- Dimensions: 5.6 x 5.6 x 10.2 cm , 0.11 kg
Frequently purchased together
- Dietary Supplement
- Mood, Relaxation, Sleep
- Non-GMO Validated
- Suitable for Vegetarians
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.
1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 tablets before bed.
Dibasic calcium phosphate, stearic acid, modified cellulose gum, and silica.
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no preservatives, or artificial color, flavor or fragrance.
If you are pregnant, may become pregnant, breastfeeding, or are taking medications such as SSRIs or MAOIs consult your health care professional before using this product.
Store in a cool, dry place.
Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.
Accidental overdose of iron-containing product is a leading cause of fatal poisoning in children under 6. Keep this product out of the reach of children. In case of accidental overdose, call a doctor or poison control center immediately.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
|Serving Size: 3 Tablets|
|Servings Per Container: 40|
|Amount Per Serving||%DV|
|Calcium (as dibasic calcium phosphate)||48 mg||4%|
|Iron (naturally occurring)||0.6 mg||3%|
|L-Tryptophan (25 mg niacin equivalents)||1.5 g||†|
|†Daily Value not established.|