Brand: 21st Century

Tablet or PillOff Market
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Net Contents

110 Tablet(s)

Serving Size

1 Tablet(s)

Servings Per Container

Not specified

Supplement Form

Tablet or Pill

Bar Code (UPC/SKU)

7 40985 27111 7

Product Version

Not specified

Suggested Use

Directions: As a dietary supplement; take one (1) tablet daily with any meal for maximum daily results; or as directed by your healthcare provider. Do not exceed recommended dosage.

Market Reference

$3.99 – $104.99· 40 listings
  • 21st Century Super Strength Softgels

    Walmart - Thrifty White Health4.8(511)
    $12.55
  • 21st Century D3 Tablets

    iHerb4.8(511)
    $12.99
  • 21st Century Vitamin D-2000, Maximum Strength D3 Tablets 110 ea Pack of 4

    Walmart - Pharma Frills
    $30.16
  • 21st Century Vitamin D3-2000 Iu Super Strength Softgels - 250 Ea, 3 Pack

    Walmart - Pharma Frills5.0(40)
    $26.67
  • 21st Century Tablets D3 500

    21st-century-vitamins4.8(208)
    $10.99
  • 21st Century Vitamin D3-2000 Iu Super Strength Softgels - 250 Ea, 2 Pack, Size: 250 ct

    Walmart - Pharma Frills4.8(511)
    $19.17
  • 21st Century Vitamin D-2000 Tablets - 110 ct Pack of 3

    GoSupps.com4.8(459)
    $54.99
  • 21st Century VitaJoy Daily D3 120 Gummies

    21st-century-vitamins4.9(54)
    $9.99

Where to Buy Locally

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Research & Studies

  • VITAMIN D AND ITS IMPORTANCE IN METABOLISM

    E ÇOTELI - RESEARCH & REVIEWS IN SCIENCE AND …, 2021 - academia.edu

    … Vitamin D has two forms; the form of cholecalciferol (Vitamin … , and the form of ergocalciferol (Vitamin D2), which is taken via … percent of vitamin D is transported by binding to vitamin D-…

    2021
  • Vitamin D and Other Useful Vitamins

    R Bartl, C Bartl - … Manual: Biology, Prevention, Diagnosis and Treatment, 2026 - Springer

    … the twenty-first century. At the cellular level, these reports describe specific actions of vitamin D, … vitamin D 2000 IU (50 μg)/day. When consumed in very high quantities, both calcium and …

    2026
  • Calcium and Vitamin D

    R Bartl, B Frisch - Osteoporosis: Diagnosis, Prevention, Therapy, 2009 - Springer

    … The far-reaching effects of vitamin D in oncology have only recently been recognized, as … of the 21st century. At the cellular level, these reports describe specific actions of vitamin D …

    2009
  • Effects of a Novel Dispersible Supplement Containing 2500 IU of Vitamin D and 1000 µg of B12 in Restoring Vitamin D and B12 Insufficiency: A Multicenter …

    N Angelopoulos, RD Paparodis, I Androulakis… - Nutrients, 2025 - mdpi.com

    … were advised to take two separate tablets: vitamin D 2000 IU (D3-fix ® , Unipharma Pharmaceuticals, Athens, Greece) administrated after lunch and vitamin B12 (B12-fix ® 1000 mcg, …

    2025
  • Investigating the Link between the Intestinal Microbiome and Th17/Treg Dysregulation in Hashimoto's Thyroiditis, and the Therapeutic Potential of Vitamin D

    S Flower, A Gruvstad Melén… - Journal of the American …, 2026 - Taylor & Francis

    2026
  • Prevalence and management of vitamin D deficiency in pregnant women in India: A physician survey

    S Kumari, AS Narkhede - IJMS, 2023 - medicinejournal.in

    … vitamin D deficiency, symptoms of vitamin D deficiency, current clinical practice in the management of vitamin … experience with the use of a vitamin D 2000 IU formulation daily in terms …

    2023

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-08-24. DSLD Label ID: 11181. 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.