Everything in your body can heal, dont believe anything thats says different.
It may take some time, but it is still possible
Inderal is a beta blocker I think and I am really not sure how long one can stay on it, but if your doctor prescribed you it, you may need for a variety of reasons. Did he/she originally prescribe it for anxiety and/or high blood pressure, heart issues? Sorry to ask so many questions but what kind of damage are you experiencing? Keep us posted!