text: <unk> (extended-release tablet) is an antiarrhythmic that is FDA approved for the {{{indicationType}}} of symptomatic atrial fibrillation/flutter and life-threatening ventricular arrhythmias. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include diarrhea, nausea, vomiting, heartburn, and esophagitis.
option_0: Quinidine gluconate 
option_1: Quinidine sulfate
option_2: Tizanidine
option_3: Lofexidine
option_4: Nefopam
option_5: Oxicam
option_6: Magnesium lactate
option_7: Dimetilan