zip will tell you to try magnesium supplements first (sorry for stealing your thunder, zip
). I've got ectopic beats as well, and I've started on the supplements for a couple of weeks already; they seem to be helping.
In addition, another member here, Harry, will tell you to try out the Zone diet too which if I'm not mistaken, is a high protein diet. Do a search on these boards and you'll likely see Harry's post.
If these don't work, as zip says, it's better to try another drug that regulates heart rhythms which doesn't affect heart rate, considering yours is already so low to begin with (unless you're a supremely fit elite athlete