This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
A patient has subclinical folate deficiency. All of the following drugs can precipitate megaloblastic anemia in this patient except 
Select and explain. 
A. Alcohol, B. Phenytoin, C. chloroquine, D. Sulfasalzine
C: chloroquine
Answer: C: chloroquine 
Explanation: Chloroquine doesnot produce megaloblastic anemia. Whereas all the other three drugs can precipitate megaloblastic anemia. From medical pharmacology padmaja 4th edition Page no 224,399,217,478