Product Overview
General Information
- Product Name
- L-Tryptophan
- Brand
- Source Naturals Products in this brand
- Bar Code
- 0 21078 01978 7
- Net Contents
- 60 Tablets
- Market Status
- On Market
- Date entered into DSLD
- 31 October 2026
- DSLD ID
- s1193
Product Classification
- Product Type
- Other Combinations
- Supplement Form
- Tablet or Pill
- Dietary Claim(s) or Use(s)
- Structure/Function, All Other
- Intended Target Group(s)
- Vegetarian, Gluten Free, Dairy Free
Label Information
Supplement Facts
- Daily Value (DV) Target Group(s)
- Adults and children 4 or more years of age
- Serving Size
- 3 Tablets
- Alternate Serving Size
- —
- Servings per Container
- 20
| Calcium (as as dibasic calcium phosphate) | 48 mg | 4% |
| Iron (as naturally occurring) | 0.6 mg | 3% |
| L-Tryptophan (as 25 mg niacin equivalents) | 1.5 g | † |
Other ingredients: dibasic calcium phosphate, stearic acid, modified cellulose gum, and silica.
% Daily Values for: Adults and children 4 or more years of age.
Label Statements
FDA Statement of Identity: Dietary Supplement
Formula re: Contains: Contains no yeast, dairy, egg, gluten, soy or wheat.
Seals/Symbols: NON GMO VALIDATED
Product Specific Information: 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.*
Suggested/Recommended/Usage/Directions: Suggested Use: 1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 tablets before bed.
Precautions re: All Other: CAUTION: 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. Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children. WARNING: Accidental overdose of iron-containing products 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.
Storage: STORE IN A COOL, DRY PLACE.
FDA Disclaimer Statement: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Brand Information
Manufactured for: Source Naturals, Inc., P.O. Box 2118, Santa Cruz, CA 95062
Source: Reverse Age Lab, October 2026
More labels from Source Naturals
Other labels with this ingredient
Labels only: each label is shown as printed on the bottle, with no grades, rankings or advice. A label in this database is not an endorsement of the product. Read the label on the bottle you buy: makers change their formulas. Reverse Age Lab is not affiliated with, or endorsed by, the National Institutes of Health or its Office of Dietary Supplements. The original labels come from the NIH’s public-domain data; the labels since are read by us. Search the Dietary Supplement Label Database.