My concern with taking the said drugs above are that on the 2nd March 2011 I have had an ablation for SVT, but when I take these drugs they seem to make me breathless and heart starts to beat quicker, and jumps. I asked my rheumatology nurse this week, which her answer was to stop taking them , quite matter of fact , but never offered anything else,I have been to the hospital and have recieved a monitor for 24hrs , so I am awaiting feedback on this . I feel as if I am between a rock and a hard place . Any advice would be appreciated. Regards C . W. Clevland