BioStacks
Best for
Ingredients (7)
Vitamin B12
100%Dose
850 mcg
Target
250–5000 mcg
Form
Premium
Biotin
100%Dose
5000 mcg
Target
1000–5000 mcg
Form
—
Zinc
100%Dose
20 mg
Target
15–30 mg
Form
Standard
Folate
100%Dose
500 mcg DFE
Target
400–800 mcg
Form
Budget
Folic Acid
75%Dose
300 mcg
Target
400–800 mcg
Form
Budget
Other Ingredients (3)
Rice ExtractFiller
Rice-based ingredients carry risk of inorganic arsenic contamination. Vague labeling — 'rice extract' does not specify what is extracted or standardized. Used as a cheap filler with no supplemental benefit.
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.
HypromelloseCapsule
Plant-derived capsule material from cellulose
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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.