BioStacks
Best for
Ingredients (4)
Vitamin D
80%Dose
800 IU
Target
1000–5000 IU
Form
Premium
Calcium
100%Dose
1300 mg
Target
200–600 mg
Form
Not listed
Vitamin K
100%Dose
90 mcg
Target
90–200 mcg
Form
Budget
Vitamin K2
22%Dose
20 mcg
Target
90–200 mcg
Form
Premium
Other Ingredients (7)
DextroseSweetener
A simple glucose sugar used as a bulking agent, sweetener, and tablet diluent
InulinFiller
Prebiotic soluble fiber from chicory root, used as a filler and flow agent in capsules and tablets
Tapioca DextrinCarrier
A starch hydrolysate from tapioca used as a carrier and flow agent
Guar GumThickener
Natural thickener derived from guar beans
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
Vegetable OilCarrier
Edible oils used as carriers in softgels and as processing aids
Sunflower LecithinEmulsifier
Non-GMO, non-allergenic emulsifier derived from sunflower seeds
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
Adults take 5 tablets daily with food. Not intended for children
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$65.99
Pricier than 91% of 638 calcium supplements
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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.