I started on the beta blocker coreg took it for
6 months then switched to Metoprolol
, lost around 15 pounds ,gave up on caffeine...since I have only very occasional headaches, and near not as sever as it was .
Yes I think our body can get immune. One point they wanted to give me an extra pill to Metoprolol-Altace because of my bp went up...I protested instead of taking more, I looked into some natural way: blood pressure lowering food, harder exercise, yoga breathing, meditation.