L-Tryptophannone

Amino Acids & Protein

Brand: California Natural

CapsuleAmino acid/ProteinOn Market
Click to view full label

Net Contents

30 Capsule(s)

Serving Size

1–2 Capsule(s)

Servings Per Container

30

Supplement Form

Capsule

Bar Code (UPC/SKU)

0 85001 51313 1

Product Version

Not Present

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

Contains

  • Milk
  • Soy
  • Gluten

Free From

  • Wheat

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: 1–2 Capsule(s) · 1–3 per day

IngredientAmount Per Serving
L-Tryptophan500 mg

Not Present

Other Ingredients

GelatinMagnesium StearateMicrocrystalline CelluloseSilicon Dioxide

Target Groups

Adult (18 - 50 Years)Women (not pregnant or lactating)Gluten FreeDairy FreeSugar Free

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Directions: For adults, take 1 to 2 capsules before bed time or take 1 to 2 capsules up to 3 times daily as needed or as directed by your health care professional. May be taken on an empty stomach.

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 breast feeding, consult your qualified health care professional. Do not take this product if you are taking any SSRIs (selective serotonin reuptake inhibitors).

Precautions re: Children

Keep out of the reach of children.

Storage

Storage

Store in a cool and dry place.

Formulation

Formulation re: Other

Manufactured in a certified GMP facility.

Formulation re: Does NOT Contain

This product contains no wheat, gluten, yeast, soy, salt, sugar, milk, artificial flavors and color and no preservatives.

Formulation re: Other

Supports restful sleep Encourages positive mood

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

Seals/Symbols

Made in the U.S.A.

General Statements: All Other Content

500 milligrams

Manufacturer & Distributor

Distributor

California Natural Vitamin Labs

Chatsworth, CA, 91311

1-888-383-1212

Market Reference

$2.75 – $195.16· 40 listings
  • California Natural L-Tryptophan

    eBay - vitashopsmart
    $18.99
  • NOW Foods L- Tryptophan Relaxation Support Capsules

    Vitacost.com4.6(4100)
    $13.46
  • L-Tryptophan Pure Encapsulations

    Pure Prescriptions4.6(42)
    $72.50
  • Best Naturals L-Tryptophan mg 60

    Best Naturals4.5(135)
    $10.99
  • Source Naturals L Tryptophan

    Smallflower.com4.6(1100)
    $9.58
  • Nutricost L- Tryptophan Capsules

    Target4.1(231)
    $15.95
  • Now Foods L-Tryptophan 500 mg

    NOW4.6(5600)
    $21.99
  • CFN L- Tryptophan 60 Cap.

    Naturitas4.4(9)
    $23.01

Where to Buy Locally

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Research & Studies

  • 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

    … of natural health products, medical foods, infant formulas, follow-up formulas, foods for special medical uses, foods for specified health … L-tryptophan supplementation does not improve …

    201622 citations
  • Oral tryptophan activates duodenal aryl hydrocarbon receptor in healthy subjects: a crossover randomized controlled trial

    GH Rueda, N Causada-Calo… - American Journal …, 2024 - journals.physiology.org

    … (Thermo Fisher Scientific, San Jose, CA) by integrating selected product ion chromatographic … In humans, oral l-tryptophan supplementation at the doses used in this study was safe and …

    202430 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
  • Effects and side effects associated with the non-nutritional use of tryptophan by humans

    JD Fernstrom - The Journal of nutrition, 2012 - academic.oup.com

    … editorial services provided for this supplement publication. The supplement is the responsibility of … Effect of L-tryptophan on brain serotonin metabolism in depressed patients. Arch Gen …

    2012143 citations
  • L-tryptophan in neuropsychiatry disorders: a review

    R Sandyk - International journal of neuroscience, 1992 - Taylor & Francis

    … Therefore, Ltryptophan supplementation has been used in … for use in conjunction with L-tryptophan to increase brain … widespread and serious public health problem and levies a …

    1992197 citations
  • Tryptophan supplementation and serotonin function: genetic variations in behavioural effects

    EL Gibson - Proceedings of the Nutrition Society, 2018 - cambridge.org

    … effects of supplementation with the serotonin precursor amino acid L-tryptophan (TRP), on … as having important implications for health, including neuropsychiatric conditions such as …

    2018108 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-05-22. DSLD Label ID: 247760. 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.