BioStacks
Nature Made

D3 125 mcg + K2 100 mcg

1 Softgel · 60 servings · $0.28/serving

71 / 100Good

Score Breakdown

Formulation
96
Safety
72
Final score
71/100

Ingredients (2)

Vitamin D3

100%

Dose

5000 IU

Target

1000–5000 IU

Form

Premium

Vitamin K2

100%

Dose

100 mcg

Target

90–200 mcg

Form

Premium

Other Ingredients (5)

CarmineColorant

Insect-derived (not vegan/vegetarian) and a recognized cause of IgE-mediated allergic reactions, including documented anaphylaxis. The FDA mandated explicit 'carmine'/'cochineal extract' labeling in 2011 specifically because of these reactions. Not toxic to the general population, but a genuine allergen with no health benefit; plant pigments achieve the same color.

Corn OilEmollient

A refined vegetable oil from corn used as a carrier in softgels

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

GlycerinHumectant

Sweet-tasting liquid used in soft capsules 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.