L-Arginine 500 mg®

Amino Acids & Protein

Brand: NOW

CapsuleAmino acid/ProteinOn Market
Click to view full label

Net Contents

250 Capsule(s)

Serving Size

2 Veg Capsule(s)

Servings Per Container

125

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 33739 00031 6

Product Version

CODE 0031C V8

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: Non-GMO, Gluten-Free, Kosher.

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
  • Egg
  • Fish
  • Shellfish
  • Tree Nuts
  • 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: 2 Veg Capsule(s) · 2 per day

IngredientAmount Per Serving
L-Arginine1 Gram(s)

Not Present

Other Ingredients

HypromelloseStearic AcidSilicon Dioxide

Target Groups

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

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Usage: Take 2 capsules twice daily as needed. Take between meals or at bedtime with at least 8 oz. of water or juice to facilitate absorption.

Warnings & Precautions

Precautions re: All Other

Caution: Take this product with at least 8 oz. of water or juice. For adults only.

Precautions re: Pregnant or Nursing or Prescription Medications

Not for pregnant or nursing women. Consult physician if taking medication (especially antihypertensives, anticoagulants, and antidiabetic drugs), have a medical condition (especially asthma or renal disease) or are planning to have surgery.

Precautions re: All Other

This product should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician. Do not use if you have had a myocardial infarction or have established coronary artery disease.

Precautions re: Children

Keep out of reach of children.

Precautions re: Allergies

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Storage

Storage

Store in a cool, dry place after opening.

Formulation

Formula re: Contains

Amino Acid Conditionally Essential Amino Acid

Formulation re: Other

Nitric Oxide Precursor

Formula re: Kosher

Triangle K (Kosher)

Formulation re: Does NOT Contain

Non-GMO

Formula re: Contains

Contains Gelatin

Formulation re: Does NOT Contain

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

Formula re: Contains

The L-Arginine used in this product is Pharmaceutical Grade.

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

A Dietary Supplement

Other Label Statements

General Statements: All Other Content

Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as in DNA synthesis and protein production. It is an important precursor of Nitric Oxide (NO) and thus plays a role in the dilation of blood vessels.

Seals/Symbols

Triangle K (Kosher)

General Statements: All Other Content

Amino Acids Family owned since 1968.

General Statements: All Other Content

Natural color variation may occur in this product.

Seals/Symbols

GMP Quality Assured

Manufacturer & Distributor

Manufacturer

NOW Foods

395 S. Glen Ellyn Rd., Bloomingdale, IL, 60108, USA

Market Reference

$7.95 – $159.40· 40 listings
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  • (2 pack) NOW Supplements, L-Arginine 500 mg, Nitric Oxide Precursor*, Amino Acid, 100 Veg Capsules, White

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  • NOW ARGININE ORNITHINE

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  • Now Foods L-ARGININE, 500 mg | Village Green Apothecary

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  • Now Foods Arginine Powder

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  • NOW L-Lysine

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  • NOW Arginine Citrulline

    Fuelsupplements.com4.7(2400)
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  • (2 pack) NOW Sports Nutrition, L-Arginine Powder, Nitric Oxide Precursor, Amino Acids, 1-Pound, Size: 3.80 x 3.80 x 6.75, White

    Walmart - Fruitful Yield4.4(1100)
    $45.32

Where to Buy Locally

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Research & Studies

  • The effectiveness of L-arginine in clinical conditions associated with hypoxia

    N Kurhaluk - International journal of molecular sciences, 2023 - mdpi.com

    … effects of L-arginine supplementation on VO 2 max in healthy … that these supplements might increase VO 2 max in healthy … , now the theoretical justification for the use of L-arginine in …

    202359 citations
  • The pharmacodynamics of L-arginine.

    RH Böger - Alternative Therapies in Health & Medicine, 2014 - search.ebscohost.com

    … L-Arginine appears to … , L-arginine restores the L-arginine/ADMA ratio to normal and, thereby, normalizes endothelial function. In conclusion, the effects of L-arginine supplementation on …

    2014109 citations
  • Beneficial effects of l-arginine on reducing obesity: potential mechanisms and important implications for human health

    JR McKnight, MC Satterfield, WS Jobgen, SB Smith… - Amino acids, 2010 - Springer

    … for the beneficial effects of l-arginine are likely complex, but … Recent studies indicate that l-arginine supplementation … and fatty acids) Thus, l-arginine holds great promise as a safe and …

    2010311 citations
  • Safety of dietary supplementation with arginine in adult humans

    CJ McNeal, CJ Meininger, CD Wilborn, CD Tekwe… - Amino acids, 2018 - Springer

    … l-Arginine (Arg) was traditionally been classified as a nutritionally nonessential amino acid for healthy adults … Thus, Arg is now recognized to be an important ingredient in dietary …

    201886 citations
  • l-Arginine Supplementation in Peripheral Arterial Disease: No Benefit and Possible Harm

    AM Wilson, R Harada, N Nair, N Balasubramanian… - Circulation, 2007 - ahajournals.org

    … There are limited options for medical management of … for l-arginine supplementation seems sound. Accordingly, we initiated a randomized clinical trial of l-arginine supplementation with …

    2007308 citations
  • A pilot study of L-arginine supplementation on functional capacity in peripheral arterial disease

    RK Oka, A Szuba, JC Giacomini… - Vascular …, 2005 - journals.sagepub.com

    … L-arginine. This pilot study provided data for safety, for power calculation and for dosing for the larger definitive trial that is now … found that L-arginine administered in a medical food bar …

    200585 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-02-25. DSLD Label ID: 244345. 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.