This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
SLE like syndrome is most commonly associated with administration of- 
Select and explain. 
A. Rifampicin, B. Procainamide, C. Digitalis, D. Phenytoin
B: Procainamide
Answer: B: Procainamide 
Explanation: Ans. is 'b' i.e., Procainamide o Several drugs can cause a syndrome resembling SLE. o This syndrome is rare with all except Procainamide and Hydralazine, which are the most frequent offenders.