BioStacks
Best for
Ingredients (5)
Vitamin D
40%Dose
400 IU
Target
1000–5000 IU
Form
Premium
Magnesium
100%Dose
500 mg
Target
100–400 mg
Form
Not listed
Calcium
100%Dose
1000 mg
Target
200–600 mg
Form
Budget
Zinc
100%Dose
15 mg
Target
15–30 mg
Form
Budget
Magnesium Oxide
100%Dose
500 mg
Target
100–400 mg
Form
Budget
Other Ingredients (5)
Titanium DioxideColorant
Banned in the EU (2022) over concerns that its ultra-fine particles may damage DNA in gut cells. Still allowed in the US. Used only for white coloring — provides no health benefit.
Rice Bran OilCarrier
An oil pressed from rice bran, used as a carrier and emollient
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
BeeswaxCoating
Natural wax produced by honeybees, used as a coating and binding agent in softgels and tablets
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
On the label
Take 3 softgels daily with a meal or glass of water. Use only as directed.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$14.89
Cheaper than 65% 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.