L-Tryptophan 500 mg®

Amino Acids & Protein

Brand: The Vitamin Shoppe

CapsuleAmino acid/ProteinOn Market
Click to view full label

Net Contents

120 Veggie Capsule(s)

Serving Size

1 Veggie Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 66536 02538 1

Product Version

Item No. VS-2538 1671379 FS 37

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.

1Dietary Attributes

Label states: Gluten-Free.

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

Allergen Guide

Free From

  • Milk
  • Soy
  • Gluten

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Supplement Facts

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

IngredientAmount Per Serving
L-Tryptophan500 mg

Not Present

Other Ingredients

Vegetable capsuleMicrocrystalline CelluloseMagnesium StearateSilicon Dioxide

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy FreeSugar Free

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Directions: Take one (1) veggie capsule daily, preferably with a meal.

Warnings & Precautions

Precautions re: Children

Keep out of reach of children.

Precautions re: All Other

Tamper evident Do not use if outer seal is broken or missing.

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: Consult your healthcare provider prior to use if you are pregnant, nursing, taking any medication or have any medical conditions.

Precautions re: All Other

Do not use with alcohol or when operating heavy machinery.

Storage

Storage

Store in a cool, dry place.

Formulation

Formulation re: Does NOT Contain

Gluten free Dairy free Soy free Nut free

Formulation re: Does NOT Contain

Does not contain: Gluten, sugar, salt, preservatives, artificial colors or flavors.

FDA Statements

FDA Statement of Identity

Dietary Supplement

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.

Other Label Statements

General Statements: All Other Content

Specialty

General Statements: All Other Content

Mood Relaxation

General Statements: All Other Content

Visit www.vitaminshoppe.com or call 1-800-223-1216 for more information and to reorder.

General Statements: All Other Content

Learn more at vsquality.net

General Statements: All Other Content

Item No. VS-2538 1671379 FS 37

Manufacturer & Distributor

Distributor

Vitamin Shoppe, Inc.

Secaucus, NJ, 07094

1-800-223-1216

Where to Buy Locally

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

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Research & Studies

  • L-Tryptofaan powder

    J South - forum.bodybuilding.nl

    … Een japans bedrijf had genetisch gemannipuleerde bacterien gemaakt die L-tryptophan aanmaaten om de productie omhoog te schroeven. LAter bleek deze bacterien naast tryptofaan …

  • l-Tryptophan

    BMD Knapp, MJ Cupp, TS Tracy - Dietary Supplements: Toxicology and …, 2003 - Springer

    … available in the United States include Tryptophan PRN 350 mg capsules, L-tryptophan 500 mg capsules, Free Aminos 750 mg capsules, and Free Aminos powder, sold under the …

    20035 citations
  • Managing mood-related symptoms utilizing diet, targeted nutrient supplementation, and lifestyle changes: A case series

    K Ross, M VanNortwick - EXPLORE, 2022 - Elsevier

    Background The Office of Disease Prevention and Health Promotion reports that mental health disorders are one of the most “common causes of disability,” affecting 18.1% of adults in …

    20223 citations
  • 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

    … The nutritional consequences of deficient intake of the essential amino acid L-tryptophan (L-Trp) have been known for more than 7 decades (1). L-Trp plays a critical role in preventing …

    201379 citations
  • Xanthurenic Acid Excretion in Urine After Oral Intake of 5 Gram L-Tryptophan by Healthy Volunteers: Standardisation of the Reference Values

    M Hoes, EKJ Kreutzer, N Sijben - Clinical Chemistry and …, 1981 - edoc.hu-berlin.de

    … The results of the first and second tests demonstrate that prior loading with L-tryptophan does … It is possible that the L-tryptophan dose is important for the urine collection period. Authors …

    198113 citations
  • The importance of quality specifications in safety assessments of amino acids: The cases of L-tryptophan and L-citrulline

    HA Oketch-Rabah, AL Roe, BJ Gurley… - The Journal of …, 2016 - academic.oup.com

    … as DSs and in pharmaceutical products, L-tryptophan (L-Trp) and L-… L-tryptophan supplementation does not improve running … associated with ingestion of L-tryptophan—United …

    201622 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2018-11-21. DSLD Label ID: 183565. 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.