BioStacks
Source Naturals

Vitamin K2 100 mcg

1 Tablet · 30 servings · $0.38/serving

67 / 100Good

Best for

Score Breakdown

Formulation
76
Safety
87
Final score
67/100

Ingredients (3)

2 scored · 1 not scored

Vitamin K-2Synergy100 mcg

Within effective range · Premium form

Vitamin D3Synergy400 IU

40% of effective dose · Premium form

Calcium110 mg

Trace amount — not scored

Other Ingredients

Fillers, coatings, and additives

6Safe1Caution

SorbitolSweetener

Caution

Magnesium StearateLubricant

Safe

Silicon DioxideAnti-caking

Safe

Calcium CarbonateBuffer

Safe

Microcrystalline CelluloseBinder

Safe

Microcrystalline CelluloseBinder

Safe

Stearic AcidLubricant

Safe

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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.