This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adverse Drug Effect, Subject name: Pharmacology
Drugs to be avoided in G6PD deficiency is - 
Select and explain. 
A. Dapsone, B. Metformin, C. Pregabalin, D. Rituximab
A: Dapsone
Answer: A: Dapsone 
Explanation: Ans. is 'a' i.e., Dapsone Drugs causing hemolytic Anaemia in G-6-PD deficiencyo Aminosalicylic acido Nalidixic acido Sulfonamides (Sulfamethoxazole)o Antimalarials - Primaquine,Quinineo Nitrofurantoino Analgesics - Aspirin, Acetanilido Phenacetino Vitamin K (water soluble form)o Chloramphenicolo Probenecido Methylene blueo Cotrimoxazoleo Procainamideo Niridazole - Phenazopyridineo Dapsoneo Quinidineo Doxorubicin