Allopurinol potentiates action of:: (A) Azathioprine, (B) Busulfan, (C) Actinomycin, (D) Procarbazine
Answer is A. Ans. (A) Azathioprine(Ref: KDT 8th/e p922)Allopurinol inhibits degradation of azathioprine and 6-mercaptopurine and thus potentiates their action.