BioStacks
Best for
Ingredients (8)
Betacarotene
100%Dose/day
1440 mcg
Target
700–1500 mcg
Form
—
Zinc
100%Dose/day
30 mg
Target
15–30 mg
Form
Standard
Selenium
100%Dose/day
100 mcg
Target
100–200 mcg
Form
Premium
Echinacea purpurea (echinacea) extract dry conc.
83%Dose/day
250 mg
Target
300–1500 mg
Form
—
Vitamin C
100%Dose/day
500 mg
Target
250–2000 mg
Form
Budget
Other Ingredients
No other ingredients listed
How to Take It
Take it anytime
Fat-soluble — take with a meal containing fat for better absorption. Time of day doesn't matter.
With a meal containing fat
Space it a couple of hours from Iron and Calcium
Split into 2 doses across the day
On the label
Adults When feeling run down: Take 2 tablets once a day. 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: 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.