supraventricular tachycardia
"I am 59, and have been on metoprol since I had an ablation about 5 months ago.  I was still experiencing a higher than normal heart rate (lower after ablation, but on the high side) and a high diastolic blood pressure. Metoprolol seemed to lower both numbers initially.  I was extremely fatigued and I started noticing weight gain.  That weight gain has been is now 18 pounds in the 5 months following the ablation. Now, none of my clothes fit. I have told my doctor about the weight gain, but he did not seem concerned. I am concerned. Has anyone else had this and were you able to do something about it?  Now, the heart rate is starting to increase again. "