Foundational · price comparison
Where to Buy Vitamin K2: Cheapest Vendor in 2026
Vitamin K2 pricing across every research peptide vendor we track, ranked by price per mg. Prices change often, so check the vendor before you buy.
No in-stock Vitamin K2 listings right now.
Vendor stock changes often, so check back. Use the compound profile to track research progress in the meantime.
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for Vitamin K2.
Coupon codes
Every active vendor coupon for Vitamin K2, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
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What is Vitamin K2?
Vitamin K2 refers to the menaquinone family of fat-soluble vitamins—structurally distinct from but functionally related to vitamin K1 (phylloquinone, found in leafy greens). Menaquinones are designated MK-n based on the length of their isoprenoid side chain, with MK-4, MK-7, and MK-9 the most nutritionally relevant forms. While vitamin K was originally discovered through its role in blood coagula… Read the full Vitamin K2 research profile
Buying Vitamin K2: FAQ
Where can I buy Vitamin K2 online?
Vitamin K2 is currently between in-stock listings across the vendors we track. Bookmark this page and check back, since vendor stock changes often.
What's the cheapest price for Vitamin K2?
No vendor we track lists it as in stock, so there is no price to compare. Check back when listings come back in stock.
Is buying Vitamin K2 online safe?
Vendor safety varies. BodyHackGuide scores every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). This page ranks listings by price per mg, not by score, so check each vendor's score breakdown on its BodyHackGuide profile before you buy.
Do I need a prescription for Vitamin K2?
Vitamin K2 is sold for research-use-only by the vendors on this page; no prescription required for research purchases. None of these vendors sell Vitamin K2 for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide earns a commission on some of its links, at no additional cost to you. Vendor rankings are based on price per mg from the listings we track. We don't accept payment for editorial placement. See our full affiliate disclosure .
Free 2026 Peptide Cheat Sheet (PDF)
38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers.