How does DoseRank decide what ranks #1?

Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value. 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.

Is a higher dose always better?

No. Dose-fit rewards landing inside the range studied for the outcome — over-dosing (common with melatonin) or under-dosing both lower the score. The goal is the effective dose, not the biggest number.

What does the Value score mean?

The Value score compares a product's price per serving with clinically relevant products ranked for the same outcome. A score of 50 is the typical price; above 50 means better value than typical, while below 50 means the product costs more than typical. It is a 0–100 value signal, not a percentile.

Why is the cheapest product not #1?

Cost is only one input. The cheapest pick here is a citrate form with weaker absorption and a stock-risk flag, so it leads on Value-for-cost but trails on the composite that also weighs evidence, dose fit and availability.

Are these affiliate links?

Retailer links may be affiliate links and DoseRank may earn a commission. Rankings and placement are determined by the scoring model only — never by payment from a brand.

Is this medical advice?

No. DoseRank summarizes evidence to help you choose; it is not a substitute for a clinician, especially if you are pregnant, breastfeeding, on medication, or managing a health condition.

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Improve vitamin K status

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Best Supplements for Vitamin K status — 1358 Ranked | DOSERANK

Top decision cards

Best products for vitamin k status

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for vitamin k status

California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules

California Gold Nutrition$0.08 / serving4.8 · 35,259Available now

Also helps with

Arterial stiffness

Bone turnover markers

Vascular function

Why this ranks here

Evidence fitVitamin K2 (Menaquinone-7, MK-7) is the strongest evidence signal for this outcome.
Dose fitVitamin K2 (Menaquinone-7, MK-7) at 120 mcg lands inside the studied 45-360 mcg window.
Price / serving$0.08 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

The numbers

120 mcgIn rangeinside the studied 45-360 mcg window

125 mcg

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Nutricost, Vitamin K2 MK-7, 100 mcg, 240 Softgels

NutricostClinical89Dose fit71Popularity99$0.07/ serving

Nutricost, Vitamin K2 + Vitamin D3, 120 Softgels

NutricostClinical89Dose fit71Popularity98$0.11/ serving

NOW Foods, Liquid D-3 & MK-7, Mint, 1 fl oz (30 ml)

NOW FoodsClinical89Dose fit71Popularity91$0.11/ serving

Futurebiotics, Vitamin K2 + D3 , 120 Capsules

FuturebioticsClinical89Dose fit70Popularity99$0.13/ serving

Metabolic Nutrition, Vitamin D3 + K2, 90 Capsules

Metabolic NutritionClinical89Dose fit78Popularity89$0.11/ serving

Micro Ingredients, Vitamin D3 & K2, 300 Softgels

Micro IngredientsClinical89Dose fit78Popularity96$0.10/ serving

NOW Foods, MK-7 Vitamin K-2 , 100 mcg, 120 Veg Capsules

NOW FoodsClinical89Dose fit71Popularity99$0.16/ serving

Micro Ingredients, Vitamin K2, MK-7, 200 mcg, 300 Softgels

Micro IngredientsClinical89Dose fit78Popularity91$0.07/ serving

Trace, Ionic D3 + K2, 2 fl oz (59 ml)

TraceClinical89Dose fit71Popularity91$0.10/ serving

Top decision cards

Best products for vitamin k status

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for vitamin k status

California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules

California Gold Nutrition$0.08 / serving4.8 · 35,259Available now

Also helps with

Arterial stiffness

Bone turnover markers

Vascular function

Why this ranks here

Evidence fitVitamin K2 (Menaquinone-7, MK-7) is the strongest evidence signal for this outcome.
Dose fitVitamin K2 (Menaquinone-7, MK-7) at 120 mcg lands inside the studied 45-360 mcg window.
Price / serving$0.08 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

The numbers

120 mcgIn rangeinside the studied 45-360 mcg window

125 mcg

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Nutricost, Vitamin K2 MK-7, 100 mcg, 240 Softgels

NutricostClinical89Dose fit71Popularity99$0.07/ serving

Nutricost, Vitamin K2 + Vitamin D3, 120 Softgels

NutricostClinical89Dose fit71Popularity98$0.11/ serving

NOW Foods, Liquid D-3 & MK-7, Mint, 1 fl oz (30 ml)

NOW FoodsClinical89Dose fit71Popularity91$0.11/ serving

Futurebiotics, Vitamin K2 + D3 , 120 Capsules

FuturebioticsClinical89Dose fit70Popularity99$0.13/ serving

Metabolic Nutrition, Vitamin D3 + K2, 90 Capsules

Metabolic NutritionClinical89Dose fit78Popularity89$0.11/ serving

Micro Ingredients, Vitamin D3 & K2, 300 Softgels

Micro IngredientsClinical89Dose fit78Popularity96$0.10/ serving

NOW Foods, MK-7 Vitamin K-2 , 100 mcg, 120 Veg Capsules

NOW FoodsClinical89Dose fit71Popularity99$0.16/ serving

Micro Ingredients, Vitamin K2, MK-7, 200 mcg, 300 Softgels

Micro IngredientsClinical89Dose fit78Popularity91$0.07/ serving

Trace, Ionic D3 + K2, 2 fl oz (59 ml)

TraceClinical89Dose fit71Popularity91$0.10/ serving

Improve vitamin K status

Improve vitamin K status

Which ingredient types matter for vitamin k statusOpen to see which ingredient types matter for vitamin k status

Vitamins

Best products for vitamin k status

California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules

Nutricost, Vitamin K2 MK-7, 100 mcg, 240 Softgels

Nutricost, Vitamin K2 + Vitamin D3, 120 Softgels

NOW Foods, Liquid D-3 & MK-7, Mint, 1 fl oz (30 ml)

Futurebiotics, Vitamin K2 + D3 , 120 Capsules

Metabolic Nutrition, Vitamin D3 + K2, 90 Capsules

Micro Ingredients, Vitamin D3 & K2, 300 Softgels

NOW Foods, MK-7 Vitamin K-2 , 100 mcg, 120 Veg Capsules

Micro Ingredients, Vitamin K2, MK-7, 200 mcg, 300 Softgels

Trace, Ionic D3 + K2, 2 fl oz (59 ml)

What every metric means

Compare the top 3, side by side

Not sure which is right for you?

Get a personal report

Frequently asked

Which ingredient types matter for vitamin k statusOpen to see which ingredient types matter for vitamin k status

Vitamins

Best products for vitamin k status

California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules

Nutricost, Vitamin K2 MK-7, 100 mcg, 240 Softgels

Nutricost, Vitamin K2 + Vitamin D3, 120 Softgels

NOW Foods, Liquid D-3 & MK-7, Mint, 1 fl oz (30 ml)

Futurebiotics, Vitamin K2 + D3 , 120 Capsules

Metabolic Nutrition, Vitamin D3 + K2, 90 Capsules

Micro Ingredients, Vitamin D3 & K2, 300 Softgels

NOW Foods, MK-7 Vitamin K-2 , 100 mcg, 120 Veg Capsules

Micro Ingredients, Vitamin K2, MK-7, 200 mcg, 300 Softgels

Trace, Ionic D3 + K2, 2 fl oz (59 ml)

Compare the top 3, side by side