This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
Drug of choice in drug induced parkinsonism is: 
Select and explain. 
A. Levodopa, B. Benzhexol, C. Amantidine, D. Carbidopa
B: Benzhexol
Answer: B: Benzhexol 
Explanation: Ans. (B) Benzhexol(Ref: KDT 8/e p460)Central anticholinergics like trihexy phenydyl (Benzhexol) are the only drugs effective in drug induced Parkinsonism.