I just went through the same thing(being on antibiotics) and my INR went from 2.6 to 3.0 then 3.9. My doc wanted me to miss a dose at 6mg then take 5mg a day.I did not miss a dose.Instead I took 5mg for 2days,down from 6mg,then got retested and dropped from 3.9 down to 2.8.The doc wants me to...