BioStacks
Best for
Ingredients (6)
Calcium
100%Dose/day
1000 mg
Target
200–600 mg
Form
Standard
Vitamin D3
40%Dose/day
400 IU
Target
1000–5000 IU
Form
Premium
Magnesium
100%Dose/day
500 mg
Target
100–400 mg
Form
Not listed
Magnesium Citrate
Amount not found
Magnesium Oxide
Amount not found
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
How to Take It
Best taken in the evening
The Magnesium in it is what pulls this toward the evening. Take it with a meal containing fat — the vitamin D in it absorbs poorly without one.
With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron and Zinc
Label directs 2 servings — keep one for the evening
On the label
Adults take 3 capsules twice daily, preferably with food.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$11.19
Cheaper than 79% of 294 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.