Is it dangerous for inr to be 4.7?

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The higher the INR, the greater the risk for bleeding. I would not say that 4.7 is necessarily dangerous, but it is not good. Generally, you want to be between 2.0 and 3.0, but your doctor may use 2.5 to 3.5 for you, depending on your situation. 4.7 is high in either case, and if the test is repeated with the same result, then you might be put on vitamin K to reverse the effects of the coumadin (warfarin). There are many drugs and herbs that can affect the INR. Some raise it (amiodarone, Vitamin C), and some lower it. If you are going to a coumadin clinic, then you need to be sure to tell them all of the drugs or supplements that you are taking, so they can see if there is an adverse reaction going on, that they may be able to correct. more
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