"My 23 year old son was diagnosed with a portal vein thrombosis.  There was no reason, and after extensive testing still unable to determine why this happened to him.  He was placed on Xarelto, and 3 months later, the thrombosis has completely cleared.  He had very minimal side effects (some oral bleeding, fatigue, occasional headache) and I was thrilled he didn&#039;t have to deal with Coumadin.  He is anxious to be done with the medication, but overall it has been pretty easy to deal with."