Oyster Shell Calcium 500 mg®
MineralsBrand: Sundown Naturals
Functions
Net Contents
120 Caplet(s)
Serving Size
1 Caplet(s)
Servings Per Container
Not specified
Supplement Form
Other (e.g. tea bag)
Bar Code (UPC/SKU)
0 30768 12429 8
Product Version
Prod. No. 44793 08G B41057 EAB
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 an established %DV per serving.
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
- Milk
- Wheat
- Soy
- 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 Caplet(s) · 2–3 per day
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
DIRECTIONS: FOR ADULTS, TAKE ONE (1) CAPLET TWO OR THREE TIMES DAILY, PREFERABLY WITH MEALS.
Warnings & Precautions
Precautions re: Children
KEEP OUT OF REACH OF CHILDREN.
Precautions re: All Other
TAMPER RESISTANT: DO NOT USE IF SEAL UNDER CAP IS BROKEN OR MISSING.
Precautions re: Pregnant or Nursing or Prescription Medications
WARNING: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.
Precautions re: All Other
Discontinue use and consult your doctor if any adverse reactions occur.
Storage
Storage
STORE AT ROOM TEMPERATURE AND AVOID EXCESSIVE HEAT.
Formulation
Formula re: Contains
Natural Oyster Shell
Formulation re: Does NOT Contain
No Artificial Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast.
FDA Statements
FDA Statement of Identity
MINERAL SUPPLEMENT
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.
Other Label Statements
General Statements: All Other Content
Promotes Bone Health*
General Statements: All Other Content
Smart Facts Calcium is one of the most important minerals in the body. Calcium provides the building blocks for strong bones and teeth, and plays a role in proper muscle contraction and nerve function.* Because the body cannot produce calcium, a balanced nutritional intake, regular exercise, healthy lifestyle choices and adequate intake of calcium and Vitamin D can play a role in maintaining optimal bone health.*
General: Product/Version Code
Prod. No. 44793 08G B41057 EAB
Brand IP Statement(s) re: (c), (TM), (SM)
(C)2012
General Statements: All Other Content
As a reminder, discuss the supplements and medications you take with your health care providers.
Seals/Symbols
{Bottle} PLEASE RECYCLE
Seals/Symbols
GUARANTEED LABORATORY TESTED QUALITY
Manufacturer & Distributor
Other
Manufacturer
Rexall Sundown, Inc.
Boca Raton, FL, 33487, USA
Other
1-888-848-2435
Market Reference
Sundown Naturals Calcium Magnesium & Zinc Caplets
Pharmaholic4.8(228)$20.00Rugby Oyster Shell Calcium 500mg Tablets Supports Strong Bones & Teeth Health 60 Count
Target$9.67Geri-Care Calcium with Vitamin D Supplement
Tri-State Surgical Supply and Equipment4.4(9)$3.94Major Oyster Shell Calcium Tablets
Medicaleshop4.5(31)$5.60Nature's Blend Oyster Shell Calcium with D3 Tablets
Walmart - Vitabox4.6(27)$16.61Oyster Shell Calcium W/d
EarthTurns.com$11.05GeriCare Oyster Shell Calcium Tablets
LL Medico$8.54Nature's Blend Oyster Shell Calcium Tablets
Swanson Health Products4.8(17)$6.29
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.
GNC
4.6 (78)Vitamin & supplements store
800 N Green River Rd, Evansville, IN 47715
The Vitamin Shoppe
4.3 (126)Vitamin & supplements store
1031 N Green River Rd Ste 104, Evansville, IN 47715
Active Nutrition, Evansville East (ANS)
5.0 (223)Vitamin & supplements store
4706 Vogel Rd, Evansville, IN 47715
Active Nutrition, Owensboro (ANS)
5.0 (132)Vitamin & supplements store
3000 Alvey Park Dr W Ste E, Owensboro, KY 42303
Active Nutrition, Evansville West (ANS)
5.0 (4)Vitamin & supplements store
5405 Pearl Dr #3, Evansville, IN 47712
Total Nutrition Fort Campbell
5.0 (1101)Vitamin & supplements store
16288 Fort Campbell Blvd, Oak Grove, KY 42262
STACK'd Supplements
5.0 (42)Vitamin & supplements store
4793 Village Square Dr A, Paducah, KY 42001
Walmart Supercenter
4.0 (1076)Department store
901 US-60, Morganfield, KY 42437
Research & Studies
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
… calcium phosphate samples prepared from Corbicula shell … of calcium phosphate prepared from commercial calcium carbonate. Generally, oyster shell produced lower yields of calcium …
2016184 citationsResearch progress on applications of calcium derived from marine organisms
Y Xu, J Ye, D Zhou, L Su - Scientific reports, 2020 - nature.com
… health, especially bone health. Marine biological … Oyster shell calcium powder can improve the chewiness and springiness of restructured ham 94 . Calcium-rich shrimp and crab shells …
202092 citationsA Practical Analysis of Calcium Supplements
DI Levenson, K Al Ohayon - Alternative Therapies in Women's Health …, 2000 - clinician.com
… "Oyster shell" calcium carbonate is actually mined from fossilized limestone quarries. Although fresh oyster shells do not incorporate contaminants, the fossilized shells have the …
20002 citationsPreparation, characterization of L-aspartic acid chelated calcium from oyster shell source and its calcium supplementation effect in rats
Z Wang, K Wang, Y Feng, S Jiang, Y Zhao… - Journal of Functional …, 2020 - Elsevier
… oyster shell (ACOS) was prepared by chelation reaction and its structural characterization and calcium supplementation … was formed through oyster shell calcium and carboxyl and …
202033 citationsHighly bioavailable nanocalcium from oyster shell for preventing osteoporosis in rats
YK Lee, SK Jung, YH Chang… - International journal of food …, 2017 - Taylor & Francis
… of calcium from zinc-activated nano-structured calcium … that calcium-rich, zinc-activated nanopowdered oyster shell (Zn-… Therefore, NPOS is a potential source of dietary calcium for …
201741 citationsAntimicrobial Properties of Thermally Processed Oyster Shell Powder for Use as Calcium Supplement
S Ahn, S Lee, S Lim - Foods, 2025 - mdpi.com
… Except for coral-derived calcium supplements, all oyster shell-derived calcium materials … the production of calcium-based materials derived from oyster shells using patented processing …
20257 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2014-02-26. DSLD Label ID: 30330. 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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