It is a blood thinner which I have been taking for about two years since my heart probs were diagnosed. I found no symptoms as you describe. I heamorraged in hospital when I was over prescribed other blood thinners although I told the staff I was taking my own.
It is,apparently, very important to take the tablet with a meal or very soon after in order to obtain maximum efficacy. That is my problem. I do not eat breakfast or snack in the morning and I take the second one last thing at night when going to bed.If I bring the evening dosset box down I will surely forget to take the tablet with my supper. Apart from that. No real probs. I would sooner have Rivaroxaban than warfarin.