pulmonary embolism
"I am taking Xarelto for a small PE (rt. lower lobe) detected upon battery of testing for origin of a "black out" I experienced.  (The PE just happened to be detected and is considered not to be the source of blackout.) So, I am sensitive to drugs, in general.
I am on the 2nd week or so of 1/day of 30mg.  I experience bizarre dreams and seem to be in a light sleep.  I have insomnia w/ the drug.  I also feel "whacked out", post even 20 hrs. after ingesting it.  In essence, I KNOW that I have taken a drug.  I sometimes have to take a nap; I feel better after doing this.  I am hoping that my body acclimates to X, but am realistic.  I am also hoping/praying that I only have to be on X for 6 mos.  I know that there are alternatives."