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: Psychiatry
Akathesia is treated by all except - 
Select and explain. 
A. Trihexyphenidyl, B. Diazepam, C. Haloperidol, D. Promethazine
C: Haloperidol
Answer: C: Haloperidol 
Explanation: Drugs used in Akathesia 

β -blockers (propranolol, metoprolol)                  
Antihistaminic (Diphenhydramine, Promethazine)
Vitamin B6
Central anticholinergics (e.g. Trihexyphenidyl)
Diazepam
Amantadine