L-Tryptophan 500 mg®
Amino Acids & ProteinBrand: Best Naturals
Functions
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.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
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
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Tryptophan | 500 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
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
Best Naturals L- Tryptophan 500 Mg 120 Capsules
Target$26.95Best Naturals L-Tryptophan mg 60
Best Naturals4.5(135)$9.99Source Naturals L Tryptophan
Vitacost.com4.6(1100)$21.81NOW Foods L- Tryptophan Relaxation Support Capsules
Swanson Health Products4.6(4100)$15.49L-Tryptophan Pure Encapsulations
Supplement First4.6(42)$124.50Source Naturals L-Tryptophan 500mg 30 Cap
Four Seasons Natural Foods4.6(1100)$9.59Pure Naturals L- Tryptophan Dietary Supplement
Walmart - VitaCare4.3(6)$12.99Nutricost L- Tryptophan Capsules
Target4.1(231)$15.95
Where to Buy Locally
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Willner Chemists
4.7 (146)Vitamin & supplements store
100 Park Ave, New York, NY 10017
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5.0 (1389)Vitamin & supplements store
8420 Eager Rd, St. Louis, MO 63144
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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 citationsA 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 citationsl-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 citationsAnalysis, 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 citationsHealth 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 citationsTryptophan 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.
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