Atrial Fibrillation
"I am a little tired and forgetful as well.  Those seem to be the most common side effects of metoprolol.  I also take flecainide and it has some of the same side effects as metoprolol so it&#039;s hard to tell which medication is causing this.  Sometimes a little hard to focus but together they seem to help with the Atrial fibrillation. "