L-Tryptophan 500 mg®

Amino Acids & Protein

Brand: Best Naturals

CapsuleAmino acid/ProteinOn Market
Click to view full label

Net Contents

60 Capsule(s)

Serving Size

1–2 Capsule(s)

Servings Per Container

60

Supplement Form

Capsule

Bar Code (UPC/SKU)

8 17716 01554 5

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

Free From

  • Milk
  • Egg
  • Fish
  • 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: 1–2 Capsule(s) · 2–3 per day

IngredientAmount Per Serving
L-Tryptophan500 mg

Not Present

Other Ingredients

GelatinMagnesium StearateRice Flour

Target Groups

Adult (18 - 50 Years)Gluten FreeSugar Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take one (1) - two (2) capsules two to three times daily on an empty stomach, with final dose at bedtime, or as directed by your qualified healthcare professional. Consider taking these other Best Naturals products: Inositol and Magnesium.

Warnings & Precautions

Precautions re: Children

Keep out of the reach of children.

Precautions re: All Other

Do not use if safety seal is broken or missing.

Precautions re: Pregnant or Nursing or Prescription Medications

Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Precautions re: All Other

Discontinue use and consult your doctor if any adverse reactions occur.

Storage

Storage

Keep in cool, dry place.

Formulation

Formula re: Contains

L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and immune system function. Best Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality. Certain research publications indicate that it may help support the following: Supports circulation & positive mood Supports relaxation & restful sleep Supports healthy immune function

Formulation re: Other

Premium formula

Formulation re: Other

3rd party lab tested

Formulation re: Does NOT Contain

No artificial color, flavor or sweetener, no preservatives, no sugar, no corn, no soy, no egg, no lactose, no gluten, no wheat, no fish, no yeast. Sodium free.

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

Seals/Symbols

Made in USA

Seals/Symbols

GMP Good Manufacturing Practice Product

Manufacturer & Distributor

Distributor

Best Naturals

PO Box 394, Kenilworth, NJ, 07033, USA

1-877-659-6004

Market Reference

$9.58 – $124.50· 40 listings
  • Best Naturals L- Tryptophan 500 Mg 120 Capsules

    Target
    $26.95
  • Best Naturals L-Tryptophan mg 60

    Best Naturals4.5(135)
    $9.99
  • Source Naturals L Tryptophan

    Vitacost.com4.6(1100)
    $21.81
  • NOW Foods L- Tryptophan Relaxation Support Capsules

    Swanson Health Products4.6(4100)
    $15.49
  • L-Tryptophan Pure Encapsulations

    Supplement First4.6(42)
    $124.50
  • Source Naturals L-Tryptophan 500mg 30 Cap

    Four Seasons Natural Foods4.6(1100)
    $9.59
  • Pure Naturals L- Tryptophan Dietary Supplement

    Walmart - VitaCare4.3(6)
    $12.99
  • Nutricost L- Tryptophan Capsules

    Target4.1(231)
    $15.95

Where to Buy Locally

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Research & Studies

  • Effectiveness of Silymarin, Sulforaphane, Lycopene, Green Tea, Tryptophan, Glutathione, and Escin on Human Health: A Narrative Review.

    F Sebastiani, C D'Alterio, C Vocca, L Gallelli… - Uro, 2023 - search.ebscohost.com

    … effect of dietary supplementation with seven active principles, ie, lycopene, sulforaphane, silymarin, glutathione, escin, tryptophan, and green tea catechins, on human health. Methods: …

    202310 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
  • l-Tryptophan

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

    … ill patients who might be of generally worse health than controls and therefore more likely to use a dietary supplement such as L-tryptophan. Of the patients identified with eosinophil …

    20035 citations
  • 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
  • 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
  • Tryptophan and its role in sleep and mood

    P Yousef, J Rosen, C Shapiro - Studies in Natural Products Chemistry, 2024 - Elsevier

    … It is consumed from different food sources in the form of L-tryptophan. In this chapter, we review the … In the pediatric population, l-tryptophan can be safely and effectively used to manage …

    202420 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-06-16. DSLD Label ID: 269825. 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.