BioStacks
Best for
Ingredients (5)
Iron
100%Dose
27 mg
Target
15–45 mg
Form
Premium
Vitamin B12
24%Dose
60 mcg
Target
250–5000 mcg
Form
Premium
Vitamin C
100%Dose
60 mg
Target
25–200 mg
Form
Budget
Folate
50%Dose
200 mcg
Target
400–800 mcg
Form
Budget
Calcium
35 mgTrace amount — not scored
Other Ingredients (4)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Calcium CarbonateBuffer
Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Best taken in the morning
Best absorbed on an empty stomach with vitamin C. If it upsets your gut, take it with a light meal instead.
On an empty stomach
Keep it away from coffee, tea and dairy
Space it a couple of hours from Calcium, Zinc, Magnesium, Manganese and Green Tea Leaf Extract
On the label
1 tablet daily. For use by adults only. Do not exceed the recommended dose.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$9.75
Cheaper than 88% 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.