BioStacks
Best for
Ingredients (7)
Caffeine
100%Dose
100 mg
Target
100–400 mg
Form
—
L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
—
GS15-4 Panax ginseng
100%Dose
200 mg
Target
200–400 mg
Form
—
KSM-66 Ashwagandha
100%Dose
300 mg
Target
300–600 mg
Form
Premium
Zembrin extract
100%Dose
25 mg
Target
8–25 mg
Form
—
Other Ingredients (4)
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.
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
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.