http://www.medications.com/effect/view/28066 There is an important point that everyone here is missing. I had been on Toprol XL for years, brand name. Recently, a generic version by Sandoz has been issued. It is the GENERIC metoprolol that is causing the side effects, the racing heart, etc. If you Sat, 15 Mar 2008 23:06:03 -0400 http://www.medications.com/effect/view/28066?item=5575 Why is it the docs deny racing heart as a side effect? It galls me that my doc never asked me which one I wanted (generic vs brand), "if" he knew there were problems with the generic brand. I would have paid out of my pocket for the drug. If this is tru http://www.medications.com/effect/view/28066?item=5575 Sun, 16 Mar 2008 17:15:46 -0400 http://www.medications.com/effect/view/28066?item=5584 Well, I agree that it is the generic that is causing the problem, however, when I began having problems shortly after starting the generic my doctor switched me back to Toprol XL. While I had tolerated it just fine for 2 years, I no longer could. The month http://www.medications.com/effect/view/28066?item=5584 Mon, 21 Apr 2008 09:52:30 -0400 http://www.medications.com/effect/view/28066?item=7484 I have had problems with the generic metoprolol succinate er. My heart is racing and pounding in my chest and i can't sleep and my blood pressure is soaring. I take it for high blood pressure so something is wrong. Icalled pharmacist, he actually got an http://www.medications.com/effect/view/28066?item=7484