BioStacks
Best for
Ingredients (4)
Vitamin D
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Vitamin K2
100%Dose
1000 mcg
Target
90–200 mcg
Form
Standard
Vitamin K1
100%Dose
500 mcg
Target
90–200 mcg
Form
Not listed
Vitamin K2
50%Dose
45 mcg
Target
90–200 mcg
Form
Premium
Other Ingredients (2)
Hypoallergenic Plant FiberFiller
Plant-derived cellulose fiber used as a hypoallergenic filler, common in Thorne and Pure Encapsulations products
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.