BioStacks
Best for
Ingredients (6)
Vitamin D3
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Calcium
100%Dose
500 mg
Target
200–600 mg
Form
Not listed
Vitamin K
89%Dose
80 mcg
Target
90–200 mcg
Form
Not listed
Vitamin C
63%Dose
25 mg
Target
40–200 mg
Form
Not listed
Marine Collagen
6%Dose
0.3 g
Target
5–20 g
Form
Not listed
Other Ingredients (3)
Rice ExtractFiller
Rice-based ingredients carry risk of inorganic arsenic contamination. Vague labeling — 'rice extract' does not specify what is extracted or standardized. Used as a cheap filler with no supplemental benefit.
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
HypromelloseCapsule
Plant-derived capsule material from cellulose
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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.