Top 7 Vitamin K2 (Menaquinone) Supplements in the USA for 2026

Thorne's high-dose MK-4 product holds a best-in-class position for users seeking the pharmaceutical-style, short-half-life menaquinone (MK-4) at a clinical-strength 15 mg dose; it stands out technically from the MK-7 products on this list by delivering a much higher microgram amount per capsule and is favored for dosing protocols that use MK-4 specifically. Financially it sits at the premium end of the market, reflecting Thorne's emphasis on rigorous testing and formulation standards compared with lower-cost MK-7 options like Nutricost or NOW Foods.

Jarrow Formulas' MK-7 provides a cost-efficient, steady-release menaquinone-7 option at 90 mcg that balances quality and affordability for daily maintenance, making it a practical alternative to both higher-cost branded MenaQ7 products and the high-dose MK-4 from Thorne. Technically it competes by offering a familiar MK-7 dose that suits long-half-life supplementation strategies and typically comes at a lower price point than multi-ingredient formulas like Life Extension Super K Elite.

Life Extension Super K Elite is positioned as a market-leading comprehensive formula, combining K1 plus both MK-4 and MK-7 to deliver broad-spectrum menaquinone coverage for users who want a single, clinically minded product rather than separate pills. Its technical advantage is the inclusion of multiple K vitamers and often additional supportive nutrients, which justifies a higher retail price compared with single-form, budget MK-7 products such as Nutricost or NOW Foods.

NOW Foods offers a straightforward, budget-friendly MK-7 at 100 mcg that competes on price and transparency, appealing to value-conscious buyers who still want a reputable company's testing and GMP standards. Compared with trademarked or multi-vitamer offerings (Doctor's Best MenaQ7 or Life Extension Super K Elite), NOW prioritizes economical single-ingredient supplementation without the premium associated with branded MenaQ7 sources.

Doctor's Best uses the patented MenaQ7 MK-7 ingredient to offer a clinically studied menaquinone-7 product at 100 mcg, which provides a technical advantage in ingredient traceability and research backing compared with generic MK-7 suppliers. Financially it typically sits in the mid-range—more expensive than commodity brands like Nutricost but often cheaper than multi-vitamin K complexes—making it a preferred choice for consumers who value branded, evidence-backed ingredients.

Nutricost positions itself as a no-frills, value-oriented MK-7 supplier, delivering 100 mcg servings at a very competitive price that undercuts many established brands on this list, making it attractive for bulk or budget buyers focused on menaquinone-7. Technically it offers a simple single-ingredient approach without the added certifications or branded ingredients (like MenaQ7), so it competes primarily on cost rather than proprietary research or multi-vitamer coverage.