Oyster Shell Calcium 500 mg With Vitamin D™

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

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Serving Size: 1 Caplet(s) · 2–3 per day

Not Present

• 

  CVS Calcium Tablets 150 ct

  CVS Pharmacy4.6(249)

  $12.79
• 

  CVS Health Calcium Vitamin D3 Tablets

  CVS Pharmacy4.6(296)

  $14.79
• 

  CVS Calcium + D3 Softgels

  CVS Pharmacy4.2(164)

  $16.49
• 

  CVS Health Calcium + D Plus Minerals Tablets 120 ct

  CVS Pharmacy4.6(59)

  $14.79
• 

  CVS Health Calcium & D3 Twin Pack Tablets

  CVS Pharmacy4.8(156)

  $23.49
• 

  CVS Health Calcium 500 Mg with D3 25 Mcg 50 Gummies

  CVS Pharmacy4.4(74)

  $11.59
• 

  CVS Calcium Citrate + D3 Tablets

  CVS Pharmacy3.8(105)

  $12.99
• 

  CVS Calcium, Magnesium, Zinc Tablets

  CVS Pharmacy4.5(143)

  $5.59

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• Holland & Barrett - Sutton In Ashfield

  4.1 (20)

  Vitamin & Supplements Shop

  4 The Idle Wells Shopping Centre, Sutton-in-Ashfield NG17 1BJ

  Directions0330 058 2640

• Holland & Barrett - Mansfield Tesco

  3.7 (10)

  Vitamin & Supplements Shop

  Jubilee Way S, Mansfield NG18 3RT

  Directions0330 058 2640

• Cortexi Supplement

  Vitamin & Supplements Shop

  17 Newark Ct, Nottingham NG5 1LS

  Directions07875 686790

• Holland & Barrett - Mansfield

  4.0 (22)

  Vitamin & Supplements Shop

  Unit 60, Four Seasons Centre, W Gate, Mansfield NG18 1SX

  Directions0330 058 2640

• Holland & Barrett - Hucknall Tesco

  4.9 (9)

  Vitamin & Supplements Shop

  Tesco Extra, Ashgate Rd, Hucknall, Nottingham NG15 7UQ

  Directions0330 058 2640

• Holland & Barrett - Ilkeston

  4.6 (27)

  Vitamin & Supplements Shop

  29A Bath St, Ilkeston DE7 8AH

  Directions0330 058 2640

• Holland & Barrett - Nottingham Clumber Street

  4.3 (70)

  Vitamin & Supplements Shop

  8-10 Clumber St, Nottingham NG1 3GA

  Directions0330 058 2640

• Holland & Barrett - Sherwood

  4.5 (47)

  Vitamin & Supplements Shop

  617 Mansfield Rd, Sherwood, Nottingham NG5 2FW

  Directions0330 058 2640

• Safety and efficacy of tocotrienol supplementation for bone health in postmenopausal women: protocol for a dose–response double-blinded placebo-controlled …

  CL Shen, H Mo, S Yang, S Wang, CK Felton… - BMJ open, 2016 - bmjopen.bmj.com

  … mg/day) for this population. Thus, we will provide calcium (500 mg elemental Ca, as Oyster Shell)/vitamin D (… The intra-assay and interassay CVs are 2.2% and 3.0%, respectively. The …

  201619 citations

• Absorbability and cost effectiveness in calcium supplementation

  RP Heaney, MS Dowell, J Bierman… - Journal of the …, 2001 - Taylor & Francis

  … to vitamin D insufficiency or to seasonal change in vitamin D … and consisting of calcium carbonate derived from oyster shell), … variation (CVs) of the serum and urine calcium increments at …

  2001278 citations

• Green tea polyphenols and Tai Chi for bone health: designing a placebo-controlled randomized trial

  CL Shen, MC Chyu, JK Yeh, CK Felton, KT Xu… - BMC Musculoskeletal …, 2009 - Springer

  … Calcium (500 mg elemental Ca, as Oyster Shell)/vitamin D (… Adequate Ca/vitamin D intake is essential for realizing the … assay CV of the BAP assay was 5.2%, and the inter-assay CV was …

  200949 citations

• Comparison of the effects of estrogen alone and estrogen plus androgen on biochemical markers of bone formation and resorption in postmenopausal women

  LG Raisz, B Wiita, A Artis, A Bowen… - The Journal of …, 1996 - academic.oup.com

  … 500 mg oyster shell calcium tablet (OS-Cal, Marion Laboratories, … The intraassay CVs for pyridinoline … There were no significant changes in PTH or vitamin D levels or in serum calcium …

  1996356 citations

• Behind the Scenes of Calcium

  I Robles, C Sichel, T Yam, JM Fagan - 2011 - rucore.libraries.rutgers.edu

  … and it merely states that Oyster shell calcium comes from “… You can get calcium supplements that include vitamin D in … CVS pharmacy was most helpful because they informed us on …

  2011

• Marine shells: Potential opportunities for extraction of functional and health-promoting materials

  Y Hou, A Shavandi, A Carne, AA Bekhit… - Critical Reviews in …, 2016 - Taylor & Francis

  … to that of calcium phosphate prepared from commercial calcium carbonate. Generally, oyster shell produced lower yields of calcium phosphate than Corbicula shell.Citation [127,128] …

  2016184 citations

• Vitamin D: What the Label Numbers Mean

  How to read vitamin D amounts on a Supplement Facts panel, the IU-to-mcg conversion, and why %DV matters.

  VitaSuppTrack Editorial· Jun 24, 2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2018-02-23. DSLD Label ID: 82475. 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.