BioStacks
Best for
Ingredients (5)
Vitamin C
100%Dose
1350 mg
Target
50–250 mg
Form
Standard
Calcium
75%Dose
150 mg
Target
200–600 mg
Form
Standard
Rutin
40%Dose
100 mg
Target
250–500 mg
Form
—
Quercetin
10%Dose
50 mg
Target
500–1000 mg
Form
—
Grape seed extract
3%Dose
5 mg
Target
150–600 mg
Form
—
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
How to Take It
Take it anytime
What's in this absorbs poorly without a fat-containing meal — take it with one.
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
As a dietary supplement, take 2 capsules daily with meals, or as directed by a healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$40.49
Pricier than 71% 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.