Menaquinone-7
Prescription status is set country by country — the label where you live is the one that applies.
Beta: the medication section is still being tested, and its data may contain errors. Do not rely on it for a decision about your own treatment.
Menaquinone-7 is a long-acting form of vitamin K2, a fat-soluble vitamin available without prescription. Vitamin K acts as a cofactor for the enzyme that activates certain proteins, including osteocalcin in bone and the clotting factors made in the liver. It is taken mainly in the context of bone health.
A usual adult range, not a national label — the dose and the timing differ by country and by product.
Approved uses differ by country — some of these may be off-label or unapproved where you live.
Because it is fat-soluble, absorption is markedly better when it is taken with a meal that contains some fat rather than on an empty stomach. The important interaction is with vitamin K antagonists: they work by blocking vitamin K recycling, so added vitamin K directly opposes them and can shift INR out of range, which is why the two are not combined. Which one is on the label depends on the market — acenocoumarol (Sintrom) in Spain, per its AEMPS product information, and warfarin where warfarin is marketed. Anyone already on warfarin or another vitamin K antagonist should not add this supplement without the prescriber knowing.
See a doctor before starting it while on warfarin or any anticoagulant, and see a doctor promptly if unusual bruising, prolonged bleeding, or an unexpected change in INR appears after it has been added.
Reference information, not medical advice. Discuss any change with your doctor.