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
Not specified
Suggested Use
Directions: As a calcium supplement; take one (1) tablet twice daily with any meal or as directed by your healthcare provider.
Market Reference
21st Century Calcium 500 + D3 Caplets
21st-century-vitamins4.8(1400)$5.49Lowest21st Century Calcium 500 + D3 Tablets
Target4.8(1100)$14.9921st Century Calcium 500 + D3 400 Tablets
iHerb4.8(1400)$10.9921st Century Calcium Plus Extra D Caplets
Walmart - Wisermerchant4.8(1400)$30.0921st Century Calcium + D3 Softgels
21st-century-vitamins4.8(657)$9.9921st Century Calcium 500 + D3 90 Cplts
Walmart - Pharma Frills4.0(8)$11.1121st Century Calcium Supplement Tablets
Target4.8(1800)$15.9921st 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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