I Am On Several Meds For At Fib, High B/p

I am on several meds for at fib, high b/p and I have itching redness of face increased sweating big time people in stores want to get me to dr.
My meds are flecainide,k+, lasix,diltiazem, xarelto, tekturna. I stay like this most of time, however my at fibb and Bp are under control. Any information regarding drug interactions would be appreciated . Thank you for your time. Mary Cook