Single-source vs multi-source drugs: what patients should know about cost, effectiveness, and insurance
Nov 19 2025
Vitamin K Supplements and Warfarin: How to Keep INR Stable
Low-dose vitamin K supplements (150 mcg daily) can help stabilize INR levels in people on warfarin by reducing wild fluctuations caused by dietary changes. This approach works best for those with documented instability despite good adherence.
