14 Very Effective Communication Skills. Statistics point to the fact that approximately 85% percent of our success in life is directly attributable to our communication skills.
Usually while on Coumadin therapy, the INR should be between 2 and 3. Occasionally the range should be 2.5 to 3.5. Many things can affect the INR; antibiotics for one, and an increase or decrease in consumption of green, leafy vegetables.
General points when taking Warfarin (Coumadin) 1  A low INR means you have increased risk of clotting. 2  A high INR means you have an increased risk of bleeding. 3  Warfarin increases INR, Vitamin K decreases it.  Most doctors aim to keep INR around 2-3, but can range to 2.5-3.5 for heart valves or other extreme cases.