Gabapentin
"Gabapentin eliminated almost all the pain I have had for eight years due to a staph infection from heart surgery. However, after a few days I developed an irregular heartbeat and had to quit taking it. I called my Doctor who said the gabapentin could not cause the irregular heartbeat, so I started taking it again. It worked wonders for the pain, but after a few days the irregular heartbeat reappears. I would love to be able to take gabapentin because it is a great pain reliever but I can't deal with the irregular heartbeat."