Niacin 500 mg®

Vitamins

Brand: 21st Century

Tablet or PillVitaminOn Market
Click to view full label

Net Contents

100 Tablet(s)

Serving Size

1 Tablet(s)

Servings Per Container

100

Supplement Form

Tablet or Pill

Bar Code (UPC/SKU)

7 40985 27474 3

Product Version

501023-0920N

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.

1% Daily Value Coverage

1 ingredients report a %DV; 1 meet or exceed 100% DV.

2Dietary Attributes

Label states: Non-GMO, 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

  • 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 per day

IngredientAmount Per Serving% Daily Value
Niacin500 mg3125%

Not Present

Other Ingredients

CelluloseHydroxypropyl MethylcelluloseStearic AcidMagnesium SilicateMagnesium StearatePolyethylene GlycolPolysorbatePolyvinyl AlcoholSilicon Dioxide

Target Groups

Adult (18 - 50 Years)Gluten Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Directions: As a vitamin supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage. Individual results may vary.

Warnings & Precautions

Precautions re: All Other

Do not exceed recommended dosage.

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure.

Precautions re: All Other

Stop use and contact a physician if adverse reactions occur. Niacin may cause temporary skin flushing, itching, and feelings of warmth. Do not use if product appears to be tampered with or seal is broken.

Precautions re: Children

Keep out of reach of children.

Storage

Storage

Store at room temperature.

Formulation

Formulation re: Other

Prolonged release

Formulation re: Does NOT Contain

Gluten free Non-GMO

Formulation re: Other

Guaranteed Quality Laboratory Tested

Formula re: Contains

Niacin (vitamin B-3) supports energy metabolism, heart health and the nervous system.

Formulation re: Other

Prolonged release vitamins are designed to reduce flushing.

Formulation re: Does NOT Contain

No added sugar, salt, yeast, preservatives, artificial flavors or colors.

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

Vitamin Supplement

Other Label Statements

General Statements: All Other Content

Compare VS. Slo-Niacin This product is not manufactured or distributed by Mainpointe Pharmaceuticals, LLC, owner of the registered trademark Slo-Niacin.

Seals/Symbols

Trusted Quality for over 30 years

Manufacturer & Distributor

Manufacturer

21st Century HealthCare, Inc.

2119 S. Wilson St., Tempe, AZ, 85282, USA

Market Reference

$8.31 – $64.99· 33 listings
  • 21st Century Niacin 500 mg Flush Free Capsules

    21st-century-vitamins4.8(19)
    $13.99
  • 21st Century Niacin 500 mg Prolonged Release Tablets

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    $8.99
  • 21st Century Niacinamide 500 mg Prolonged Release 110 Tablets

    Walmart - Thrifty White Health4.7(2000)
    $8.31Lowest
  • 21st Century Niacina Liberación Prolongada 500mg 100ct Niacinamide Vit B3 Sabor Neutro

    internationalrxpharmacy.net5.0(1)
    $14.99
  • 21st Century Flush Free Niacin 500mg 110 Capsules Pack of 2

    GoSupps.com4.8(19)
    $64.99
  • 21st Century HealthCare - 74098522550 - Dietary Supplement Nature's Way Vitamin B3 500 mg Strength Capsule 110 per Bottle 21st Century Nutritional Pro

    Neobits.com
    $27.95
  • 21st Century Niacinamide 500 mg Tablets Prolonged Release - 110 ct Pack of 2

    GoSupps.com4.7(2000)
    $29.99
  • Niacin 500 mg Veg Tabs Slow Release - 100 Tablets

    AlchePharma Naturals
    $16.69

Where to Buy Locally

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Research & Studies

  • Niacin

    M Meyer-Ficca, JB Kirkland - Advances in Nutrition, 2016 - academic.oup.com

    … These results indicate that a therapeutic increase of NAD concentrations might prevent age-associated health decline and that dietary supplementation with niacin as the major …

    2016112 citations
  • Niacin: chemical forms, bioavailability, and health effects

    D MacKay, J Hathcock, E Guarneri - Nutrition reviews, 2012 - academic.oup.com

    … under medical monitoring and supervision. Although available on the market as a … supplement in tablets of 500 mg and 750 mg, NA should not be used at gram dosages without medical …

    2012170 citations
  • Niacin: The Real Story

    AW Saul, A Hoffer, HD Foster - 2023 - books.google.com

    … on niacin’s clinical benefits in a number of health conditions. These … A bottle of 100 tablets of vitamin C, 500 milligrams each, … to even a 100 milligrams niacin supplement. We need extra …

    20237 citations
  • … of a tolerable upper intake level of niacin: a systematic review and meta-analysis of the dose-dependent effects of nicotinamide and nicotinic acid supplementation

    C Minto, MG Vecchio, M Lamprecht… - Nutrition …, 2017 - academic.oup.com

    … In healthy individuals treated with nicotinic acid alone, major … The ULs were set at 10 mg/d and 900 mg/d in the European … 17 mg/d and 500 mg/d in the United Kingdom for nicotinic acid …

    201743 citations
  • Niacin: the evidence, clinical use, and future directions

    TC Villines, AS Kim, RS Gore, AJ Taylor - Current atherosclerosis reports, 2012 - Springer

    … triglycerides: impact on Global Health outcomes (AIM-HIGH) … into prescription niacin and dietary supplement niacin (Tables … begin niacin extended-release at a starting dose of 500 mg …

    201284 citations
  • Pharmacologic use of niacin

    J Prousky, CG Millman… - Journal of Evidence …, 2011 - journals.sagepub.com

    … migraine, 300 to 500 mg of crystalline niacin can be chewed … Alternatively, 375 mg of sustained-release niacin can be taken … Physiological niacin supplements will improve skin health …

    201143 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-02-23. DSLD Label ID: 326335. 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.