Re: Is an INR of 4.4 dangerously high?
That's about it, happened to me too. Just another inconvenience to learn as you get used to this problem.
Rule of thumb, "anything I eat may change my INR". Vitamin K.
You will find that bruising is a problem too.
Make sure all you doctors, dentist too, know about your FVL. It changes how some problems are dealt with. When I needed surgery I stopped the warfarin and gave myself fondaperinux shots, doctor prescribed.
Learn to ask questions. It's easier that way.