NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Reviewed May 26, 2026

Best form of vitamin k.

Forms guide ·3 forms compared ·Reviewed May 2026

For most people, Vitamin K2 MK-7 is the vitamin k form to reach for (cardiovascular and bone support). Vitamin K1 (Phylloquinone) is the most budget-friendly option. Vitamin K2 MK-4 suits bone-focused protocols using multiple daily doses. There is no single best form for everyone; the right pick depends on your goal, how well you absorb it, and your budget.

Forms compared
3
Best for most
Vitamin K2 MK-7
From
$0.90 /mo
Full profiles
3
In short

The short answer.

A quick, honest verdict. The full side-by-side, with typical doses, is below.

For most people, Vitamin K2 MK-7 is the vitamin k form to reach for (cardiovascular and bone support). Vitamin K1 (Phylloquinone) is the most budget-friendly option. Vitamin K2 MK-4 suits bone-focused protocols using multiple daily doses. There is no single best form for everyone; the right pick depends on your goal, how well you absorb it, and your budget.

Side by side

Every form, compared.

Best use, cost tier, and a typical adult dose for each form. The best-for-most pick is a sensible default, not the only good choice.

The main forms of vitamin k, compared by best use, cost tier, and typical adult dose.
FormBest forCostTypical dose
Vitamin K1 (Phylloquinone)Basic dietary vitamin K supportBudget100-500 mcg/day
Vitamin K2 MK-4Bone-focused protocols using multiple daily dosesMid1-5 mg/day
Vitamin K2 MK-7Best for mostCardiovascular and bone supportPremium90-200 mcg/day
Vitamin K1 (Phylloquinone)
Leafy-green dominant form focused on coagulation support. Primarily supports clotting pathways.
Best for: Basic dietary vitamin K support
Budget100-500 mcg/day
Vitamin K2 MK-4
Short-half-life K2 form that often needs divided dosing. Short tissue half-life means dosing is often multiple times daily.
Best for: Bone-focused protocols using multiple daily doses
Mid1-5 mg/day
Vitamin K2 MK-7 Best for most
Long-half-life K2 form preferred for once-daily dosing. Long half-life supports steady once-daily exposure.
Best for: Cardiovascular and bone support
Premium90-200 mcg/day
Go deeper

Full vitamin k profiles.

Each profile has the evidence, dosing by goal, interactions, and cited sources.

Full profileVitamin K2Full profileVitamin K1Full profileVitamin K2 MK-4
FAQ

Common vitamin k questions.

Quick answers, drawn from the comparison above.

What is the best form of vitamin k?

Vitamin K2 MK-7 is the best vitamin k form for most people (cardiovascular and bone support). The right form still depends on your goal, absorption, and budget; see the full comparison for the alternatives.

What is the cheapest form of vitamin k?

Vitamin K1 (Phylloquinone) is the most budget-friendly form, typically a budget-tier option, with a typical dose of 100-500 mcg/day.

How many forms of vitamin k are there?

NutriStack compares 3 commonly sold forms of vitamin k: Vitamin K1 (Phylloquinone), Vitamin K2 MK-4, Vitamin K2 MK-7.

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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.