Diltiazem
"I am 60 years old and started taking diltiazem 240mg about 11/20/2012 along with Xarelto 20mg and Sotalol 80mg twice a day after being diagnosed with atrial fibrillation. On 12/21/2012, I had an electrocardioversion that did not cure the atrial fibrillation. Today (1/28/2013), I visited my Cardiologist and my pulse is down to the low 60's, my BP is normal and the irregular heartbeat is under control. He said to discontinue the Xarelto, but to continue with the Diltiazem and Sotalol. He is monitoring my heart for the next 24 hours."