BioStacks
Best for
Ingredients (6)
Zinc
67%Dose
10 mg
Target
15–30 mg
Form
Premium
Selenium
50%Dose
50 mcg
Target
100–200 mcg
Form
Premium
Vitamin C
80%Dose
200 mg
Target
250–2000 mg
Form
Budget
Astragalus Root 4:1 Extract
25%Dose
50 mg
Target
200–500 mg
Form
—
Echinacea purpurea Root 4:1 Extract
17%Dose
50 mg
Target
300–1500 mg
Form
—
Other Ingredients (4)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
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.