L-Tryptophan 500 mg®

Amino Acids & Protein

Brand: Swanson

CapsuleAmino acid/ProteinOn Market
Click to view full label

Net Contents

60 Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

0 87614 11502 3

Product Version

SW1502 Rev 1 09 24 18

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Supplement Facts

Serving Size: 1 Capsule(s) · 1 per day

IngredientAmount Per Serving
L-Tryptophan500 mg

Not Present

Other Ingredients

GelatinBrown Rice FlourHydroxypropyl CelluloseMagnesium Stearate

Target Groups

Adult (18 - 50 Years)

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take one capsule with water 30–60 minutes before sleeping.

Warnings & Precautions

Precautions re: All Other

Warning: For adults only.

Precautions re: Pregnant or Nursing or Prescription Medications

Do not take this product if you are pregnant or nursing or taking prescription antidepressants. Consult your physician before using this or any product if you are taking medication or have a medical condition.

Precautions re: Children

Keep out of reach of children.

Precautions re: All Other

Do not use if seal is broken.

Storage

Storage

Store in a cool, dry place.

FDA Statements

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.

FDA Statement of Identity

Dietary Supplement

Other Label Statements

General Statements: All Other Content

Encourages healthy sleep patterns Helps regulate the body's circadian rhythm Supports healthy serotonin levels Science-Backed Quality Since 1969

General Statements: All Other Content

Sleep support 500 mg per capsule

General: Product/Version Code

SW1502 Rev 1 09 24 18

Manufacturer & Distributor

Distributor

Swanson Health Products

Fargo, ND, 58104, USA

1-800-437-4148

Market Reference

$4.79 – $64.65· 40 listings
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  • Nutricost L- Tryptophan Capsules

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  • Source Naturals L Tryptophan

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  • Doctor's Best L- Tryptophan 500 mg 90 Veggie Caps

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  • L- Tryptophan

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  • Best Naturals L- Tryptophan 500 Mg 120 Capsules

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    $26.95

Where to Buy Locally

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Research & Studies

  • Tryptophan prevents the development of non-alcoholic fatty liver disease

    R Yanko, M Levashov, OG Chaka, V Nosar… - Diabetes, Metabolic …, 2023 - Taylor & Francis

    … Despite the essential role of tryptophan in maintaining health… Our results show that L-tryptophan attenuates … -6-phosphatase was determined by the Swanson method, measuring the …

    202320 citations
  • A systematic review of the effect of L-tryptophan supplementation on mood and emotional functioning

    AM Kikuchi, A Tanabe, Y Iwahori - Journal of dietary supplements, 2021 - Taylor & Francis

    … This systematic review includes 11 RCTs that examined the effects of TRP intake on positive and negative mood in healthy adult populations. We have targeted healthy adult men and …

    2021109 citations
  • Characterisation of an acute anorexigenic action of l-tryptophan: a link with neural mechanisms regulating appetite

    SN Gartner - 2018 - researchcommons.waikato.ac.nz

    … TRP supplementation in healthy participants with no sleep problems caused a mild hypnotic … A range of oral doses seem effective in humans including 500 mg or 1 g mixed with 30 mg …

    2018
  • Supplementing healthy women with up to 5.0 g/d of L-tryptophan has no adverse effects

    C Hiratsuka, T Fukuwatari, M Sano, K Saito… - The Journal of …, 2013 - academic.oup.com

    … intake of the essential amino acid L-tryptophan (L-Trp) have … Indeed, pellagra remains a public health problem in many … the nutritional requirements for L-Trp (300 mg/d in adults) (12) …

    201379 citations
  • Analysis, nutrition, and health benefits of tryptophan

    M Friedman - International Journal of Tryptophan Research, 2018 - journals.sagepub.com

    … of some of the reported health-promoting aspects of … Here, tryptophan refers to l-tryptophan and the isomeric form … the dietary supplementation of tryptophan to healthy adults (n …

    2018402 citations
  • A heretofore undisclosed crux of eosinophilia-myalgia syndrome: compromised histamine degradation

    MJ Smith, RH Garrett - Inflammation Research, 2005 - Springer

    … import alert in November 1989 for LTCDS in which L-tryptophan is the sole or major component [… [73] Swanson DR. A second example of mutually isolated medical literatures related by …

    200543 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-05-28. DSLD Label ID: 203138. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.