Dietary Supplement Label Database

L-Tryptophan 500 mg

On market
Photo of the Source Naturals L-Tryptophan 500 mg label
Photo of the label, from the NIH's original record · Open full size ↗
Supplement Facts
Serving Size 1 Tablet(s)
Servings Per Container 20
Amount Per Serving% Daily Value
Vitamin B6Coenzymated9 mg529%
Pyridoxal 5-Phosphate13 mg
Calcium (as Dibasic Calcium Phosphate)Naturally Occurring57 mg4%
IronNaturally Occurring0.6 mg3%
L-Tryptophan1.5 g†
NiacinNiacin Equivalents25 mg
† Daily Value not established.

Other ingredients: Dibasic Calcium Phosphate, Stearic Acid, modified Cellulose Gum, Magnesium Stearate, Silica

% Daily Values for: Adults and children 4 or more years of age.

Where this label comes from

An original label of the NIH's Dietary Supplement Label Database, entered there on 22 November 2022, shown here as it was entered. The NIH's record · picture of the label (PDF)

General information

Product name
L-Tryptophan 500 mg
Brand
Source Naturals
Barcode (UPC)
0 21078 01987 9
Net contents
60 Tablet(s)
Market status
On market
DSLD ID
274809

Classification

Supplement form
Tablet or Pill
Product type
Other Combinations
Claim types on the label
Nutrient, All Other, Structure/Function
Intended for
Adult (18 - 50 Years)

Label statements

FDA Statement of Identity: Dietary Supplement

Formula: Contains: L-Tryptophan with coenzyme B-6

Directions: Suggested Use: 1 tablet three times daily, between meals and preferably with fruit juice. To support restful sleep, take an additional 3 tablets before bed.

Precautions: 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.

Storage: Store in a cool, dry place.

Precautions: All Other: Do not use if either tamper-evident seal is broken or missing.

Precautions: Children: Keep out of the reach of children.

Formula: Contains: The essential amino acid L-tryptophan helps support relaxation, restful sleep, and a positive outlook. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. This tryptophan includes the activated coenzyme form of vitamin B-6, called P-5-P, that is required to convert tryptophan to serotonin. 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.

Precautions: Children: Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

Brand information

Manufactured for: Source Naturals, Inc., Santa Cruz, CA

More labels from Source Naturals

Every Source Naturals label ›

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.