L-Tryptophan 500 mg®

Amino Acids & Protein

Brand: Jarrow Formulas

CapsuleAmino acid/ProteinOff Market
Click to view full label

Net Contents

60 Vegetarian Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

60

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 90011 15056 5

Product Version

07311TRYP PROD # 115056

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.

3Dietary Attributes

Label states: Vegan, Vegetarian, 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
  • Egg
  • Fish
  • Peanut
  • Wheat
  • 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 Capsule(s) · 1 per day

IngredientAmount Per Serving
L-Tryptophan500 mg

Not Present

Other Ingredients

Magnesium StearateCelluloseSilicon DioxideVegetarian Capsule

Target Groups

VeganVegetarianAdult (18 - 50 Years)Gluten FreeDairy Free

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

USAGE: Take 1 capsule on an empty stomach 30 minutes before sleep with water or fruit juice or as directed by your qualified health care consultant.

Warnings & Precautions

Precautions re: Pregnant or Nursing or Prescription Medications

WARNING: DO NOT take this product if you are on any medications, especially, antidepressants, or if you are pregnant or breastfeeding, consult your qualified health care professional. DO NOT take this product if you are taking any SSRI’s (selective serotonin reuptake inhibitors).

Precautions re: Children

Keep out of the reach of children.

Formulation

Formulation re: Vegetarian/Vegan

Suitable for vegetarians/vegans.

Formulation re: Does NOT Contain

No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts, no corn.

Formula re: Contains

Tryptopure

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

L-tryptophan is an essential amino acid and hence cannot be synthesized by the body, but must be obtained from food or supplements. Because L-tryptophan is converted to serotonin (5-hydroxytryptamine) and melatonin in the body, it plays an important role in promoting relaxation, restful sleep and positive mood.* L-tryptophan may also help in reducing carbohydrate cravings.* Jarrow FORMULAS® L-Tryptophan TryptoPure® is manufactured at a GMP facility via fermentation from vegetable materials.

Seals/Symbols

(symbol)vegan

General Statements: All Other Content

Pharmaceutical Grade - Highest Purity

General Statements: All Other Content

Lot #. Best Used Before:

Brand IP Statement(s) re: (c), (TM), (SM)

(C) 2011 Jarrow FORMULAS(R)

General: Product/Version Code

07311TRYP PROD # 115056

Brand IP Statement(s) re: (c), (TM), (SM)

TryptoPure® is a registered trademark of Ajinomoto AminoScience of Japan.

General Statements: All Other Content

For Relaxation,* Positive Mood* & Sleep*

Manufacturer & Distributor

Distributor

Jarrow Formulas Superior Nutrition and Formulation

P.O. Box 35994, Los Angeles, CA, 90035-4317

Market Reference

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  • Protocol For Life Balance L-Tryptophan 500 mg

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Where to Buy Locally

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Research & Studies

  • Tryptophan As A Nutraceutical–Clinical And A Critical

    MR Suchitra, P Krubaa, S Parthasarathy - European Journal of Molecular & … - academia.edu

    … L Tryptophan is available in the commercial product as 125 mg/ capsule or 500 mg/ capsule … was lowered in preeclamptic compared with the healthy placental arteries, consistent with …

  • Successful discontinuation of chronic polypsychotropic regimen and resolution of withdrawal syndrome through nutrition and lifestyle interventions: A case …

    K Brogan, A Siefert - Adv Mind Body Med, 2019 - kajabi-storefronts-production.s3 …

    … The patient took 500-1500 mg nightly of L-tryptophan for SNRI withdrawal support (Pure … a medical disability leave. She received 0.5 mg Klonopin and restarted Lamictal at 25 mg. …

    20193 citations
  • THE MOOD CURE

    TOT CHARGE - tantor-site-assets.s3.amazonaws …

    … if it would be appropriate for you to take 5-HTP, L-tryptophan, L-tyrosine, D-phenylalanine or L-… supplements used at my clinic: 800-7339293 or consult an experienced alternative health …

  • Analysis, nutrition, and health benefits of tryptophan

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

    … Here, tryptophan refers to l-tryptophan and the isomeric form produced during food … in the absence of l-tryptophan; ie, the mice must meet the entire need for l-tryptophan from the d-…

    2018402 citations
  • … in the plasma tryptophan-to-large-neutral-amino-acids ratio attenuates the effects of L-tryptophan on gut hormones and energy intake in healthy males: a randomized …

    J Anjom-Shoae, M Hajishafiee, PCE Fitzgerald… - The American journal of …, 2025 - Elsevier

    Background L-tryptophan (“Trp”) and L-leucine (“Leu”), when administered intraduodenally, increase plasma cholecystokinin (CCK) and glucagon-like peptide 1 (GLP-1) and stimulate …

    20253 citations
  • Health benefits of tryptophan in children and adults

    BN Nayak, HS Buttar - J. Pharm. Sci. Technol. Manage, 2015 - pharmacy.nmims.edu

    … This mini-review provides a brief overview of the role of L-tryptophan in the synthesis of serotonin, quinolinic acid, and kynurenic acid, which are critically important for neuronal …

    201512 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-04-26. DSLD Label ID: 7601. 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.