I was on Warning and no problem, had to have blood test every week ot 2. Pharmaceutical office doe the health care plan suggested that my MD put ne on this Xarelto. It was down hill from first week. Almost put me in nursing home with dementia. I have friends in Henderson and her Dad in nursing home on Xarelto. She had MD stop the Xarelto blood thinner and he was home in a week, his memory coming back. I did some research and checked neighbors and 3 had died from the blood thinner because they didn't go to md when feel down