I've been on Toprol XL since October 2006. Initially I took only 25 mg in the morning. Since January 2007, due to an increase in my PVC's and Pac's my dosage was increased. I now take 25 mg in the morning and another 25 mg at night. I don't know if the split in the dosage makes a difference with the lack of problems, but other than a little fatigue, I've had no problems. Good luck to you.
I have already answered you on one of your previous posts, but I wanted to let you know, in case you didn't read it, I had the exact same foggy feeling you describe. I took the Toprol until I couldn't stand it anymore, then I was switched to the generic form of the same drug, metoprolol. It was not time released like the Toprol XL is. It is more of an immediate acting drug. I had almost none of the same side effects. But I quit taking it anyway because I wasn't getting any relief of the ectopic beats anyway. I went off it five or six months ago all together and I have not had any repeat episodes of the a-fib for a year. Good luck!
The Toprol will make you feel groggy for a little while, but this usually goes away with continued treatment. Best of luck to you in getting the afib under control.
I take 100mg of toprol xl at bedtime and just started 50 mg in the morning. It has helped calm things down but I still have daily episodes of paroxsymal atrial fib. Have been on toprol xl for quite a few years now. A recent heart cath got the PAF started. Not fun.