VitaSuppTrack

L-Phenylalanine 500 mg®

Amino Acids & Protein

Brand: Best Naturals

Tablet or PillAmino acid/ProteinOn Market

Functions

Brain & Cognition
Click to view full label

Net Contents

180 Tablet(s)

Serving Size

1 Tablet(s)

Servings Per Container

180

Supplement Form

Tablet or Pill

Bar Code (UPC/SKU)

8 17716 01422 7

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 Tablet(s) · 1–3 per day

IngredientAmount Per Serving
L-Phenylalanine500 mg—

Not Present

Other Ingredients

Dicalcium PhosphateMicrocrystalline CelluloseCroscarmellose SodiumStearic AcidMagnesium StearateSilicon DioxidePharmaceutical Glaze

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy FreeSugar Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take one (1) tablet one to three times daily as needed, preferably between meals.

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

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

Storage

Storage

Keep in cool, dry place.

Formulation

Formula re: Contains

L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine and a whole series of neurotransmitters and hormones. Because tyrosine is necessary for the synthesis of proteins and the production of the neurotransmitters dopamine and norepinephrine, L-Phenylalanine is also a direct precursor of PEA (phenylethylamine), another important neurotransmitter. Phenylalanine is an extremely important nutrient that must be obtained through the diet or by supplementation. Certain research publications indicate that L-Phenylalanine may help support the following: Supports nervous system Supports positive mood Supports an alert state

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 starch, no corn, no soy, no egg, no milk, no lactose, no gluten, no wheat, no yeast, no fish. 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

General Statements: All Other Content

For additional information call 1-877-659-6004

Manufacturer & Distributor

Distributor

Best Naturals

PO Box 394, Kenilworth, NJ, 07033, USA

1-877-659-6004

Market Reference

$8.06 – $67570.00· 37 listings

  • Best Naturals DLPA 500 mg 120 Tablets

    Best Naturals4.8(13)
    $8.99

  • Best Naturals DLPA 500 mg Tablets

    Walmart - Best Naturals4.8(21)
    $13.75

  • Source Naturals L-Phenylalanine 500 mg Tablets

    iHerb4.7(125)
    $9.38

  • (3 pack) Best Naturals Dlpa 500 mg 120 Tablets, White

    Walmart - Best Naturals4.8(21)
    $22.92

  • Source Naturals L-Phenylalanine 500 mg 50 Tablets

    Instacart5.0(1)
    $13.89

  • Pure Naturals L-Phenylalanine 500 Mg 120 Capsules

    Walmart - Vitaminshub5.0(1)
    $8.49

  • Now Foods L-Phenylalanine 500 mg 120 Veg Capsules

    Nutrition Stop4.7(808)
    $18.99

  • Nutricost L-Phenylalanine Capsules

    Walmart - eSupplements, llc4.7(218)
    $12.95

Where to Buy Locally

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

Showing representative supplement & health retailers — search above for stores in your area.

Research & Studies

  • Phenylalanine

    S Ryan-Vollmar - Natural Health, 1999 - go.gale.com

    … The body metabolizes L-phenylalanine into tyrosine (a … L-phenylalanine also works with tryptophan (an essential … that one to four grams of L-phenylalanine (in combination with vitamin […

    1999

  • Emerging therapeutic and cosmeceutical applications of phenylalanine and its metabolites

    Z Liao, T Parumasivam, Z Xiao, X Zhu… - Cutaneous and …, 2026 - Taylor & Francis

    Objective This review aims to comprehensively examine and integrate the extant knowledge pertaining to phenylalanine (Phe) and its key metabolites, namely tyrosine (Tyr), …

    2026

  • The effect of various doses of phenylalanine supplementation on blood phenylalanine and tyrosine concentrations in tyrosinemia type 1 patients

    WG van Ginkel, HE van Reemst, NS Kienstra, A Daly… - Nutrients, 2019 - mdpi.com

    … mg and 100 mg of L-phenylalanine were prepared by the pharmacy in the University Medical … concentrations while receiving 40 mg/kg/day phenylalanine supplementation, whereas all …

    201921 citations

  • Risk Assessment of" Other Substances"–L-phenylalanine and DL-phenylalanine

    L Frøyland, M Haugen, K Holvik, M Løvik… - European Journal of …, 2020 - hal.science

    … information on adverse health effects related to intake of L-phenylalanine and no information … 100, 250, 500, 750 and 1000 mg/day L-phenylalanine in food supplements are considered …

    20202 citations

  • … of Total Isoflavones in Chickpea (Cicer arietinum L.) Sprouts Germinated under Precursors (p-Coumaric Acid and L-Phenylalanine) Supplementation

    J Arora, B Kanthaliya, A Joshi, M Meena, S Meena… - Plants, 2023 - mdpi.com

    … Compared to non-treated sprouts, p-CA at 250 mg L −1 and Phe at 500 mg L −1 were viable … into the diet could offer a natural and convenient means of obtaining these health-promoting …

    202319 citations

  • Protein substitutions as new-generation pharmanutrition approach to managing phenylketonuria

    FN Keskin, TÖ Şahin, R Capasso… - Clinical and …, 2022 - pmc.ncbi.nlm.nih.gov

    … This review discusses the efficacy and safety considerations of basic medical nutrition … of phenylalanine (Phe) caused by a hepatic L-phenylalanine-4-hydroxylase (PAH) enzyme activity …

    202212 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: 270644. 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.

Related Products

100% Beef Aminos label

100% Beef Aminos

Universal

Amino Acids & ProteinTablet or PillOn Market
View details
100% Beef Aminos label

100% Beef Aminos

Universal

Amino Acids & ProteinTablet or PillOn Market
View details
100% Beef Aminos label

100% Beef Aminos

Universal

Amino Acids & ProteinTablet or PillOn Market
View details
100% Beef Aminos label

100% Beef Aminos

Universal

Amino Acids & ProteinTablet or PillOn Market
View details