This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
A commonest side effect of Dapsone is : 
Select and explain. 
A. Hemolytic anemia, B. Thrombocytopenia, C. Cyanosis, D. Bone marrow depression
A: Hemolytic anemia
Answer: A: Hemolytic anemia 
Explanation: Hemolysis develops in almost every individual treated with 200-300 mg dapsone per day. Doses of less than 100 mg in healthy persons and less than 50 mg per day in persons with G-6PD deficiency do not cause hemolysis. Methemoglobinemia is also very common.