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L-Tryptophan 500 mg

Source NaturalsUpdated April 2026

This product has been discontinued. Label data shown is from the last available version.

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Product Information

Form
Capsule
Servings Per Container
20
UPC
0 21078 01984 8
Product Type
Amino acid/Protein
DSLD Entry Date
2017-04-25

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy FreeSugar Free

All Ingredients

IngredientAmount% DV
Iron575 mcg3%
L-Tryptophan1.5 g

† Daily Value not established.

Label Statements

FDA Statement of Identity

Dietary Supplement

General Statements: All Other Content

Mood, relaxation, sleep

Formulation re: Does NOT Contain

Non GMO Validated

Seals/Symbols

Non GMO Validated

General Statements: All Other Content

The essential amino acid L-tryptophan helps support relaxation, restful sleep, and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep/wake cycles. 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 capsule three times daily, between meals and preferably with fruit juice. To support restful sleep, take 3 capsules before bed.

Precautions re: All Other

Do not use if either tamper-evident seal is broken or missing.

Precautions re: Children

Keep out of the reach of children.

Storage

Store in a cool, dry place.

Precautions re: Pregnant or Nursing or Prescription Medications

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.

Formulation re: Other

Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Formulation re: Does NOT Contain

Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

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.

General: Product/Version Code

SN1984 REV L141

Supplement Facts Panel

Supplement Facts
Serving Size 3 Capsule(s)
Servings Per Container 20
Amount Per Serving% Daily Value*
Iron
575 mcg3%
L-Tryptophan
1.5 g

* Percent Daily Values are based on a 2,000 calorie diet.

† Daily Value not established.

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