BioStacks
Best for
Ingredients (3)
Vitamin D3
40%Dose
400 IU
Target
1000–5000 IU
Form
Premium
Coral Calcium
100%Dose
1000 mg
Target
200–600 mg
Form
Budget
Calcium
100%Dose
420 mg
Target
200–600 mg
Form
Budget
Other Ingredients (4)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
Calcium CarbonateBuffer
Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron, Magnesium and Zinc
On the label
2 capsules 1 to 2 times daily.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$36.20
Near the median of 638 calcium supplements
Track this supplement in your stack
Get personalized insights, interactions, and coverage recommendations.
Get Started FreeSimilar Supplements
Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.