system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following drugs are Class I anti -arrhythmic drugs EXCEPT:
assistant
The correct answer is  Quinidine and procainamide are class IA drugs, Flecainide is IB drug.propranolol is class II drug. beta blockers are class 2 agents except for sotatolol sotalol-class3 REF.Essentials of Pharmacology KD Tripathi 8th ed.