You asked me what medications I have tried to help with (PVC/PAC) attacks. Well, I have tried Toprol XL
which is a long-acting cardiospecific beta blocker. For me, Toprol XL made be feel puffy, that is, my breathing seemed funny like I couldn't get a deep enough breath. I also felt dragged out on Toprol XL. Perhaps I should have reduced the dosage but I just stopped it. I have also tried Tenormin (Atenolol) which is also a cardiospecific beta blocker.