I have seen another post on this but it was a few months ago so thought I would see if there is anymore information. I have been on Rivaroxiban for about six weeks. I have felt fine on it. I had niggling side effects on Warfarin bladder infections, constipation, slight diarrhoea. I have occasional AF which has reduced considerably since I had a pacemaker. Currently I have a really severe stomach upset which is much worse than anything I have had in my life. The doctor has prescribed some re-hydration sachets. I can just make it to the toilet and back. I will most likely ring back today to arrange a sample to be tested. It may have nothing to do with Rivaroxiban and may be a virus or food poisoning although my husband has not caught it yet. I have never had anything like this before. Any comments please much appreciated.