BioStacks
Best for
Ingredients (3)
Vitamin D3
100%Dose
5000 IU
Target
1000–5000 IU
Form
Premium
Vitamin K2
100%Dose
180 mcg
Target
90–200 mcg
Form
Premium
Calcium
90%Dose
180 mg
Target
200–600 mg
Form
Budget
Other Ingredients (7)
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.
Medium Chain Triglyceride OilCarrier
Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent
Ascorbyl PalmitateAntioxidant
Fat-soluble form of vitamin C used as preservative
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
HypromelloseCapsule
Plant-derived capsule material from cellulose
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Rosemary ExtractPreservative
Natural plant-derived antioxidant used to preserve freshness and prevent oxidation of oils and fats 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.