Calcium Carbonate (Oyster Shell)
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- Limited research evidence available for ingredients
B
Label Compliance Grade
Label
Product Label
Details
Label Data
1250 mg
Serving Size
400
Servings
Mineral
Product Type
0%
Evidence Coverage
Ingredients
Supplement Facts — Evidence Check
Calories
5 {Calories}
Calcium
500 mg
(50% DV)
Other Ingredients
None
Claims
Label Claims — Verification
Unverified
All Other
Unverified
Structure/Function
Info
Product Information
Directions for Use
Directions: As a dietary supplement, take 1250 mg (3/8 tsp) once or twice daily with meals, or as directed by physician.
Warnings & Precautions
Warning: This product is not intended for use by those with a serious medical condition or pregnant or lactating women.
Consult your physician before use.
Keep out of reach of children.
Do not take if you are allergic to shellfish.
Formulation Notes
Free of: sugar, soy, dairy, yeast, gluten, corn and additives.
Additional Information
Storage: Keep dry, cool & dark
US Standard Measuring Spoons Spoon Size (level) milligrams 1/4 teaspoon 857 1/2 teaspoon 1715 1 teaspoon 3431
Metadata
Product Details
DSLD Entry Date2013-09-25
Product TypeMineral
FormPowder
BrandPureBulk.com
DSLD ID23045
Data Updated2026-04-11
Research
Research Evidence
511
Research Sources
57
Avg Quality
266
Meta Analysis
95
Systematic Review
76
Rct
49
Clinical Trial
12
Guideline
4
Regulatory Source
2
Cochrane Review
2
Other
2
Narrative Review
1
Openfda Safety
A
Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
A
Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
A
Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
A
Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
A
Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
A
First-line drugs for hypertension
A
Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
A
Calcium and vitamin D for increasing bone mineral density in premenopausal women
A
Beta-blockers for hypertension
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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.