Since I've been back to work after Christmas Breack .i can't get my inr on my target of 4 . Been on injections of fragmine every day . The clinic has raised my dose to 8 mg daily in stead of 8 7 8 7 but still doesn't come up above inr of 3 .the only thing that I've done is that the hospital has increased my dose of aziophrine from 75mg to 100 mg would this be the cause of my warfrin not coming in to my range ???