BioStacks
Best for
Ingredients (6)
Quercefit Quercetin Phytosome
100%Dose
500 mg
Target
500–1000 mg
Form
—
Zinc
67%Dose
10 mg
Target
15–30 mg
Form
Standard
Vitamin C
100%Dose
500 mg
Target
50–250 mg
Form
Budget
Rutin
20%Dose
50 mg
Target
250–500 mg
Form
—
Citrus Bioflavonoids
20%Dose
50 mg
Target
250–1000 mg
Form
—
Other Ingredients (3)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
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
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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.