I'm looking into starting flying lessons soon, and wondering if I'll be able to get a 3rd class medical certificate or if I should just give up before I waste my time. I have what's called inappropriate sinus tachycardia, meaning my heart rhythm is normal, but the rate is too fast. I've had countless cardiac tests to try and find an underlying cause, but there is none. I am currently taking nadolol and ivabradine to keep my heart rate normal. As long as I take those daily, everything is good. Do I have any chance of passing the medical exam?