BioStacks
Best for
Ingredients (12)
Selenium
50%Dose
50 mcg
Target
100–200 mcg
Form
Premium
Pygeum africanum bark extract
67%Dose
50 mg
Target
75–200 mg
Form
—
Zinc
100%Dose
15 mg
Target
15–30 mg
Form
Budget
Saw Palmetto Berry Extract
56%Dose
90 mg
Target
160–320 mg
Form
Budget
Stinging Nettles 4:1 concentrate
40%Dose
120 mg
Target
300–600 mg
Form
Budget
Other Ingredients (11)
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.
SucroseSweetener
Added sugars and high glycemic load; dental caries risk
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Ascorbyl PalmitateAntioxidant
Fat-soluble form of vitamin C used as preservative
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
HypromelloseCapsule
Plant-derived capsule material from cellulose
LeucineFlow Aid
Branched-chain amino acid used as a processing aid
Mixed TocopherolsAntioxidant
Natural vitamin E used as preservative
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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.