Allopurinol potentiates the action of:: (A) Coicosteroids, (B) Probenecid, (C) 6-Mercaptopurine, (D) Ampicilin
Answer is C. Allopurinol: used for chronic gout Reduces uric acid synthesis by competitively inhibiting xanthine oxidase Allopurinola Alloxanthine a noncompetitive inhibitor of xanthine oxidase ESSENTIALS OF MEDICAL PHARMACOLOGY;7TH EDITION;KD TRIPATHI;PAGE NO 216