BioStacks
Best for
Ingredients (5)
Organic Black Elderberry Fruit
100%Dose
300 mg
Target
300–600 mg
Form
—
Organic Black Currant Fruit
63%Dose
50 mg
Target
80–500 mg
Form
—
Vitamin D3
20%Dose
200 IU
Target
1000–5000 IU
Form
Premium
Zinc
20%Dose
3 mg
Target
15–30 mg
Form
Premium
Vitamin C
14%Dose
36 mg
Target
250–2000 mg
Form
Not listed
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.