I've had problems with the generic also. Was on Toprol XL for 3 years with my BP in the 110/70 range and heart rate in the 60's. Am taking 50MG daily. When they switched me to the generic last month, my heart rate and BP both went up significantly and my anixety level was above anything I had experienced before.
I wound up in the hospital the first part of this week with atrial fibrillation. My doctor put me back on the regular Toprol XL and after 3 days, I am almost back to normal.
Please realize that Toprol IS metaprolol! The more of it you take and the longer you're on it, the more problems you can expect, but don't even think of stopping it all at once, or you can DIE!
Probably your dr. changed to generic to save you money...It's the SAME, just cheaper, and the more the deadlier.
been there, done that