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Oyster Shell Calcium & Magnesium

product on market Tablet or Pill Nature's Blend Safety: 80/100
80/100

This product is generally safe

  • Magnesium: 465mg is 1.3× the Tolerable Upper Intake Level (350mg)
  • 50% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Calcium and magnesium are widely researched for supporting bone density and neuromuscular function. While evidence for these minerals is strong, the specific evidence coverage for this formulation is limited. The ingredients are generally considered safe for most adults when taken as directed.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Magnesium: 465mg is 1.3× the Tolerable Upper Intake Level (350mg)

Label

Product Label

Label for Oyster Shell Calcium & Magnesium
Open Full PDF View on NIH DSLD →
Details

Label Data

3 Tablet(s)
Serving Size
33
Servings
Mineral
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calcium
750 mg (58% DV)
465 mg (111% DV)
Exceeds UL by 1.3× (UL: 350 mg) 316 studies (A:8, B:159)

Other Ingredients

Modified Cellulose Croscarmellose Sodium Maltodextrin Acacia Gum Magnesium Stearate Stearic Acid Silicon Dioxide Triacetin Polydextrose Wax
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: As a dietary supplement, take three tablets daily, preferably with a meal, or as directed by your healthcare professional.

Warnings & Precautions

Keep out of the reach of children.

Double safety sealed for your protection. Do not use if either seal is broken or missing.

Formulation Notes

Preservative & gluten free. No starch, artificial colors, artificial flavors, wheat, yeast, or corn added.

This product is manufactured under strict quality control guidelines; therefore, purity and label potency are guaranteed. Made in USA & American Owned

Calcium is needed by the body for healthy bones, muscles, nervous system, and heart. Magnesium contributes to the maintenance of bone health and a healthy immune function.

Additional Information

Store in a cool, dry place.

Questions/Comments Call 1-800-682-9862

Lab Tested Potency Assay Guaranteed Release

Metadata

Product Details

UPC / SKU0 79854 50023 3
DSLD Entry Date2022-08-23
Product TypeMineral
FormTablet or Pill
DSLD ID274596
Data Updated2026-04-11
Research

Research Evidence

849
Research Sources
56
Avg Quality
450
Meta Analysis
152
Rct
137
Systematic Review
73
Clinical Trial
11
Regulatory Source
7
Other
7
Guideline
3
Openfda Safety
2
Cochrane Review
2
Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008 PubMed DOI
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023 PubMed DOI
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019 PubMed DOI
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021 PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.