BioStacks
Best for
Ingredients (14)
Vitamin D
100%Dose
2000 IU
Target
1000–5000 IU
Form
Premium
Iodine
100%Dose
150 mcg
Target
150–500 mcg
Form
Premium
Vitamin B12
1%Dose
2.4 mcg
Target
250–5000 mcg
Form
Premium
Vitamin B6
7%Dose
1.7 mg
Target
25–100 mg
Form
Premium
Biotin
3%Dose
30 mcg
Target
1000–5000 mcg
Form
—
Other Ingredients (2)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
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.