True regarding acetazolamide is: (A) Irreversible inhibitor of carbonic anhydrase, (B) Structural resemblance to sulfonamides, (C) It decrease so potassium excretion, (D) It cause metabolic alkalosis
Answer is B. Acetazolamide is non-competitive but reversible inhibitor of carbonic anhydrase It is a sulfonamide derivative It causes hypokalemia and metabolic acidosis.