Yes Hilery, i did suffer with the shortness of breathe. It lasted quite awhile, about a month or so. I have been off toprol xl for the last and finally time. My dr kept insisting i needed this med, but im now doing just fine without it.Basically, i have stopped all bp med except, verapamil 240mg and hctz 12.5 mgs. I also take an asprin 325mg ecotrin. I am very active and toprol discourage activity.