This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Hepatotoxic drugs are All except 
Select and explain. 
A. Methotrexate, B. Isoniazid, C. Cycloserine, D. Ethionamide
C: Cycloserine
Answer: C: Cycloserine 
Explanation: Refer KDT 6/e p 744 Rifamipicin,INH ,pyrazinamide are first line drugs for TB that are Hepatotoxic Cycloserine does not cause hepatotoxicity .Its major adverse effect is neuro psychiatric reactions