Warfarin works by blocking Vitamin K-dependent clotting factors. This is intentional — but it also impairs Vitamin K2 (MK-7) beneficial effects on arterial calcification and bone. This is a monitored interaction, not a simple depletion.
Standard warfarin pharmacology; Westenfeld et al. (2012) — K2 deficiency and arterial calcification in warfarin users
Arterial calcification, bone loss — while INR is maintained for clotting prevention
CRITICAL: Do NOT supplement Vitamin K without prescriber approval — will alter INR and anticoagulation. Discuss the K2 (MK-7) arterial calcification concern with your cardiologist. Some practitioners use very low, consistent K2 doses with careful monitoring.
Discuss with your physician before adjusting supplementation. This is educational content, not medical advice.
CoQ10 has a mild Vitamin K-like structure and can reduce warfarin efficacy slightly in some individuals. Monitor INR when starting CoQ10.
Spigset (1994) — case report of INR reduction with CoQ10; modest interaction
Altered INR — not a depletion but a monitoring requirement
Low-dose CoQ10 (30–60mg) with INR monitoring if approved by prescriber.
Discuss with your physician before adjusting supplementation. This is educational content, not medical advice.
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