Calcium 500 + D3 Plus Extra D3®
Single Vitamin & MineralBrand: 21st Century
Functions
Net Contents
60 Tablet(s)
Serving Size
1 Tablet(s)
Servings Per Container
Not specified
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
7 40985 27521 4
Product Version
501078-0314
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
2 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
2 ingredients report a %DV; 1 meet or exceed 100% DV.
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
- Shellfish
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) · 2 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Vitamin D3(Cholecalciferol) | 600 IU | 150% |
| Calcium(Oyster) | 500 mg | 50% |
Percent Daily Value (DV)
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Directions: As a calcium supplement, take one (1) tablet twice daily with any meal or as directed by your healthcare provider.
Warnings & Precautions
Precautions re: Allergies
Contains a shellfish ingredient (oyster shell).
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.
Precautions re: All Other
Do not exceed recommended dosage.
Storage
Storage
Store at room temperature.
Formulation
Formula re: Contains
500mg Calcium 600 IU Vitamin D3
Formula re: Contains
Contains a shellfish ingredient (oyster shell).
Formula re: Contains
Vitamin D3 is added to assist with Calcium absorption and as support for immune function.*
Formulation re: Does NOT Contain
No added Sugar, Yeast, Preservatives or Artificial Flavors.
Formula re: Contains
Calcium 500 + D3 PLUS EXTRA D3
FDA Statements
FDA Statement of Identity
CALCIUM SUPPLEMENT
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Other Label Statements
Brand IP Statement(s) re: (c), (TM), (SM)
Compare Active Ingredients to OS-CAL(R) EXTRA D3
General Statements: All Other Content
- Support for Bone Health - Easy to Swallow
Seals/Symbols
LABORATORY TESTED GUARANTEED QUALITY
General: Product/Version Code
501078-0314
General Statements: All Other Content
Calcium is an important mineral for supporting bone health.* Calcium also works to support muscle and nerve function.*
General Statements: All Other Content
Adequate Calcium and Vitamin D3 as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis in later life.
Brand IP Statement(s) re: (c), (TM), (SM)
Os-Cal(R) is a registered trademark of GlaxoSmithKline, Pittsburgh, PA 15230
General Statements: All Other Content
Individual results may vary.
Manufacturer & Distributor
Manufacturer
21st Century Healthcare, Inc.
2119 S. Wilson Street, Tempe, AZ, 85282, USA
Market Reference
21st Century Calcium 500 + D3 Caplets
21st-century-vitamins4.8(1400)$5.49Lowest
21st Century Calcium 500 + D3 Tablets
Target4.8(1100)$14.99
21st Century Calcium 500 + D3 400 Tablets
iHerb4.8(1400)$10.99
21st Century Calcium Plus Extra D Caplets
Walmart - Wisermerchant4.8(1400)$30.09
21st Century Calcium + D3 Softgels
21st-century-vitamins4.8(657)$9.99
21st Century Calcium 500 + D3 90 Cplts
Walmart - Pharma Frills4.0(8)$11.11
21st Century Calcium Supplement Tablets
Target4.8(1800)$15.99
21st Century Calcium Citrate + D3 Maximum
Swanson Health Products4.8(4200)$8.49
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.
CVS
3.2 (82)Vitamin & supplements store
407 E Base St, Madison, FL 32340
Body Biotics
4.7 (3)Wellness center
249 SW Rutledge St, Madison, FL 32340
CVS Pharmacy
4.3 (47)Pharmacy
407 E Base St, Madison, FL 32340
Downtown Nurition
5.0 (2)Health food restaurant
291 SW Rutledge St, Madison, FL 32340
Dr. Ed's Nutrition Shoppe
4.9 (49)Vitamin & supplements store
1531 Baytree Rd, Valdosta, GA 31602
Herbal Connection by Iron Faith Nutrition
4.9 (19)Vitamin & supplements store
1252 Lakes Blvd, Lake Park, GA 31636
GNC
4.3 (37)Vitamin & supplements store
1700 Norman Dr #1192, Valdosta, GA 31601
Jays Pharmacy of Madison
4.4 (42)Pharmacy
683 E Base St, Madison, FL 32340
Research & Studies
Minerals and vitamins in bone health: the potential value of dietary enhancement
JP Bonjour, L Guéguen, C Palacios… - British journal of …, 2009 - cambridge.org
… defined in France corresponds to P combined with a large intake of calcium phosphate with … ) vitamin D3 plus 600mg Ca. This study showed no effect of the extra 500mg phylloquinone (…
2009206 citationsVitamin D in health and disease: current perspectives
R Zhang, DP Naughton - Nutrition journal, 2010 - Springer
… D3 is immediately converted to vitamin D. Excess UVB rays transform previtamin D3 into … that daily calcium (500 mg) and vitamin D (400 IU) supplementation was associated with an …
2010577 citationsOverview of the conference “Vitamin D and Health in the 21st Century: an Update”
PM Brannon, EA Yetley, RL Bailey… - The American journal …, 2008 - academic.oup.com
… form vitamin D3 (cholecalciferol), which the vitamin D binding … However, calcium and vitamin D supplementation during … over pathways convert excess vitamin D to inactive metabolites …
2008251 citationsOptimal vitamin D status: a critical analysis on the basis of evidence-based medicine
…, C Mathieu, D Vanderschueren… - The Journal of …, 2013 - academic.oup.com
… , a daily intake of 500–700 IU of vitamin D 3 is sufficient to … vitamin D excess and few against vitamin D deficiency (… to estimate active calcium absorption in otherwise healthy individuals …
2013391 citationsVitamin D and bone health; Potential mechanisms
E Laird, M Ward, E McSorley, JJ Strain, J Wallace - Nutrients, 2010 - mdpi.com
… Excess non-hydroxylated vitamin D is stored in the liver, adipose tissue and muscle [24]. … trial [115] supplementing with 500 IU D3 and 1000 mg calcium/d over the same intervention …
2010508 citationsVitamin D: evidence-based health benefits and recommendations for population guidelines
WB Grant, SJ Wimalawansa, P Pludowski, RZ Cheng - Nutrients, 2025 - mdpi.com
… extra-skeletal benefits and optimal thresholds for vitamin D. In … 1000 mg/day of calcium significantly reduced the risk of hip … a monthly maintenance dose of 50,000 IU of D3 until delivery; …
2025162 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2015-03-25. DSLD Label ID: 43591. 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.
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