Drug of choice in drug induced parkinsonism is

(Benzhexol) (421-KDT 6th)* Trihexyphenidyl (Benzhexol) is most commonly used drug in drug induced Parkinsonism* "Anticholinergics are the only drugs effective in drug (phenothiazine) induced parkinsonism "Drug used in Alzheimer's disease Acetylcholinesterase inhibitors - donepezil, galentamine, rivastigmine, tacrine NMDA receptor antagonists - Memantine