BioStacks
Best for
Ingredients (4)
Vitamin D
100%Dose
5000 IU
Target
1000–5000 IU
Form
Premium
Magnesium Glycinate
100%Dose
170 mg
Target
100–400 mg
Form
Premium
BioPerine Black Pepper Fruit Extract
100%Dose
5 mg
Target
5–20 mg
Form
—
Magnesium
100%Dose
170 mg
Target
100–400 mg
Form
Not listed
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
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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.