Atrial Fibrillation
"I started metaprolol 12.5 mg once a day 6 weeks ago after having an electrical cardioconversion for a rapid, irregular heartbeat. I take blood pressure and pulse 2times/ day and it is averaging 107/71, pulse 63- working well. It took me a good 4 weeks to adapt to the tough side effects though. I felt very tired to the point of falling asleep during the day, was worn out if I walked to far or even stood too long, felt lightheadedness, nauseated, was afraid to drive. I&#039;m glad I stuck it out, the side effects finally abated. Hang in there, the bad side effects can go away. For the record I&#039;m a 69 year old woman, 5`4&quot; 128 lbs. I take the pill at night."