Everything DoseRank tracks on the vitamin k shelf — Vitamin K2 (Menaquinone-7, MK-7) and Calcium Phosphate. The category itself is never ranked: 325 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing vitamin k supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Bone turnover markersBiochemical indicators of bone formation and resorption.259 rankedStrong
Vitamin K statusBiochemical sufficiency of vitamin K.265 rankedStrong
Arterial stiffnessReduced elasticity of arteries associated with cardiovascular risk.255 rankedStrong
Vascular functionOverall health and reactivity of the circulatory system.232 rankedModerate-strong
Bleeding tendencyExcess susceptibility to bruising or bleeding.74 rankedStrong
Coagulation statusOverall blood clotting tendency.67 rankedStrong
All-cause mortalityDeath from any cause; lowest-level hard clinical outcome.154 rankedModerate-strong
Bone mineral densityMeasure of bone strength and mineralization.192 rankedStrong
Fall riskLikelihood of falling due to instability or weakness.152 rankedModerate-strong
Vitamin D statusBiochemical sufficiency of vitamin D.158 rankedStrong
Fracture riskLikelihood of bone fracture.199 rankedStrong
Calcium statusAdequacy of calcium availability or stores.162 rankedStrong
Depressive symptomsLow mood, anhedonia, and related depressive features.163 rankedStrong
Hair growth or densityIncrease or preservation of scalp or body hair.20 rankedModerate-strong
Night vision or dark adaptationAbility to see or adapt under low-light conditions.23 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best vitamin k supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 325 products against that goal's trials.