BioStacks
Best for
Ingredients (2)
Vitamin D3
40%Dose
400 IU
Target
1000–5000 IU
Form
Premium
Calcium
100%Dose
1200 mg
Target
200–600 mg
Form
Budget
Other Ingredients (6)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Sunflower LecithinEmulsifier
Non-GMO, non-allergenic emulsifier derived from sunflower seeds
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
Vegetable OilCarrier
Edible oils used as carriers in softgels and as processing aids
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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.