Drug comparisons
Mexiletine vs Tocainide
Mexiletine vs Tocainide: class Ib antiarrhythmics. Mexiletine used for VT; Tocainide discontinued due to agranulocytosis and pulmonary risks.
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Clinical context
Cardiologists comparing remaining oral class Ib options for refractory ventricular tachycardia after other agents fail.
Bottom line
Mexiletine is the only remaining practical choice as Tocainide is obsolete, though both carry significant risks and are not first-line.
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