<prompt> Which of the following drug DOES NOT cause megaloblastic anemia?PhenytoinChloroquineSulfasalazineMetformin  <response>: Agents implicated in drug induced macrocytic anemia are: Phenytoin Azathioprine Metformin Leflunomide Sulfisoxazole Sulfasalazine Mesalamine Zidovudine Trimethoprim Sulfamethoxazole 