I got a second class medical in 2006, which is now a third class. I am going to try to get a first class, but have been diagnosed as having art fib. About three weeks ago I decided it was finally time to get my blood pressure under control (it was 188 over 90). Today it is 135 over 80 and I am feeling much better. I was also diagnosed as having art fib. If I am on a beta blocker (which will be perscribed Wednesday) will I have any issues obtaining my first class medical? Secondly, how long does it usually take for medication to correct something like art fib? Thanks in advance.