Brand: 21st Century

Tablet or PillSingle Vitamin and MineralOn Market
Click to view full label

Net Contents

110 Tablet(s)

Serving Size

1 Tablet(s)

Servings Per Container

110

Supplement Form

Tablet or Pill

Bar Code (UPC/SKU)

7 40985 21364 3

Product Version

500088-0919N

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

2Active Ingredients

2 distinct active ingredients are disclosed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

2% Daily Value Coverage

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

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

  • 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
Niacin100 mg625%
Calcium(Calcium Carbonate)160 mg12%

Not Present

Other Ingredients

CelluloseCroscarmellose SodiumMaltodextrinSilicon DioxideStearic AcidContains Less Than 2% of

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.

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.

Precautions re: Children

Keep out of reach of children.

Precautions re: All Other

Do not use if product appears to be tampered with or seal is broken.

Storage

Storage

Store at room temperature.

Formulation

Formulation re: Does NOT Contain

No added Sugar, Yeast, Preservatives, Artificial Flavors or Colors.

Formulation re: Other

Energy & Circulatory Support

Formulation re: Does NOT Contain

Gluten free

Formula re: Contains

Niacin (vitamin B-3) plays a role in energy metabolism.

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

Individual results may vary.

Seals/Symbols

Guaranteed quality Laboratory tested

Manufacturer & Distributor

Manufacturer

21st Century HealthCare, Inc.

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

Market Reference

$4.89 – $36.39· 23 listings
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  • 21st Century Niacin 100 mg 110 Tablets

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  • 21st Century Niacin Tablets 100 mg 110 Count

    GoSupps.com4.7(1200)
    $24.99
  • 21st Century B-1 100 mg Tablets

    iHerb4.7(378)
    $5.49
  • 21st Century B-100 Complex Prolonged Release Tablets

    21st-century-vitamins4.8(2200)
    $9.49
  • 21st Century B-6 100 mg Tablets

    Swanson Health Products4.7(1400)
    $5.49
  • 21st Century Niacin 500 mg Prolonged Release Tablets

    iHerb4.7(307)
    $8.99
  • 21st Century Men's Health One Daily Multivitamin Multimineral Supplement Tablets

    Walmart - Thrifty White Health4.7(8900)
    $9.29

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 supplementation and mortality in the US population: analysis of NHANES diet interviews and TriNetX health records

    M Ferrell, DC Kaelber, J Shaia - Precision Nutrition, 2025 - journals.lww.com

    … for Health Statistics study [ 14 ] (226,767 person-years including 3140 deaths). We refer to this cohort with dietary niacin, supplemental niacin … dietary niacin intake, supplemental niacin …

    2025
  • Niacin: The Real Story: Learn about the Wonderful Healing Properties of Niacin

    A Hoffer, AW Saul, HD Foster - 2015 - books.google.com

    … Therefore, this book concentrates on niacin's clinical benefits in a number of health conditions. … nutritious foods, will not come close to even a 100 mg niacin supplement. We need extra …

    201525 citations
  • Niacin as a component of combination therapy for dyslipidemia

    M Miller - Mayo Clinic Proceedings, 2003 - Elsevier

    … Despite efforts by the medical and public health communities … had suboptimal LDL-C levels (=100 mg/dL), and 33% had … niacin is available over the counter as a dietary supplement. …

    2003114 citations
  • Niacin Brain Benefits: Boosting Cognitive Function and Mental Health

    CNI Memory - neurolaunch.com

    … Nicotinamide riboside, a specialized form, shows promise at 250–1,000 mg daily. Consult a healthcare provider before supplementing to avoid niacin toxicity and interactions. …

  • The B-complex vitamins related to energy metabolism and their role in exercise performance: A narrative review

    AC Gonçalves, GV Portari - Science & Sports, 2021 - Elsevier

    … riboflavin supplementation did not show positive effects, while there is evidence that high niacin … to elucidate the real effects of thiamine, riboflavin, and niacin in exercise performance. …

    202143 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-01-22. DSLD Label ID: 258477. 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.