I hate it too, my inr is always F-up b/c I may have a drink one week, and take Aleave the next. I never know. One week, my levels were 8!!! I freaked the nurse out, and I guess I had been taking the wrong dose of meds.. Now I take 6 mg 5 days a week and 3 mg. 2 days a week. They want mine around 2.4.
I feel ya.
-Amy