im a 53 yr old male and in 1998 i had wpw wolf parkinsin white syndrom and had the ablation done and in 1999 i had 5 heart bypasses .. i just had a cardiolite stress test done with an echo and they came back fine...im on toporol for 10 plus years and im now in the last 4-5 years convinced that its this medicine causing my back pain and weakness and sometimes breathing problems when i go short distance.. I need some help so i went to family dr. and checked my breathing chest x ray etc... my cadiologist cut my toporol in half to 25 mg 2xs a day i was taking 50 2xs with diovan he put me on 2 months ago and now put me on texturna 150 i have been taking for about 3 days my heart dr. got mad at me and almost trew me out of his office... I cut my toporol in half 3-4 months ago and back became much better but bp went high so i had no choice than to go back on them.. my family dr. yesterday says try coreg is it safe to wein off toporol to half the dose and take texturna 150 and add coreg??? thanks George in buffalo ny