Akathesia is treated by all except -
Drugs used in Akathesia 

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