Brief Answer:
interaction Not known, but be very careful.

Detailed Answer:
Respected Sir
1. Xarelto (rivaraoxaban) and viagra (sildenafil) have no usually known / expected interaction. Neither the manufacturers brochure has any comments on this issue. But this comes with a rider, rivaroxaban is relatively a new drug, hence the number of people taking both these medications together will be low/less, so the experience of medical fraternity. Since rivaroxaban is a potentially XXXXXXX drug and any excess of its action can result in serious bleeding, you must be careful while taking any other drug with it. It is possible that any two drugs can interact in an adverse manner, in a given patient, known to medical community hitherto.
2. I would recommend you to discuss this out with your primary physician also, who has prescribed this drug to you.
Feel free to discuss further.
Sincerely
Sukhvinder

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