BioStacks
Best for
Ingredients (6)
Vitamin C
88%Dose
220 mg
Target
250–2000 mg
Form
Standard
Vitamin C
100%Dose
280 mg
Target
250–2000 mg
Form
Budget
Rutoside
20%Dose
50 mg
Target
250–500 mg
Form
—
Citrus bioflavonoids extract
10%Dose
25 mg
Target
250–1000 mg
Form
—
Hesperidin
5%Dose
25 mg
Target
500–1000 mg
Form
—
Other Ingredients
No other ingredients listed
How to Take It
Take it anytime
Water-soluble — timing doesn't matter. Split doses above ~500 mg if you want to absorb more of it.
With or without food
On the label
Adults For immune system health: Take 1 tablet once a day, or as prescribed by a health professional. To reduce the duration and severity of common cold symptoms: Take 1 tablet two times a day, or as prescribed by a health professional. Take with food.
General guidance based on the ingredients, not a substitute for the label or your doctor.
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.