BioStacks
Best for
Ingredients (9)
Zinc
100%Dose
15 mg
Target
15–30 mg
Form
Standard
Vitamin C
100%Dose
1285 mg
Target
50–250 mg
Form
Budget
Elderberry Extract
17%Dose
50 mg
Target
300–600 mg
Form
—
Citrus Bioflavonoid Complex
20%Dose
50 mg
Target
250–1000 mg
Form
—
Quercetin Dihydrate
10%Dose
50 mg
Target
500–1000 mg
Form
—
Other Ingredients
No other ingredients listed
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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.