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