All drugs are used in Treatment of Mania except -

Drugs used for mania are Lithium, Valproate, Carbamazepine / Oxcarbazepine, Typical & atypical antipsychotics (olanzapine, risperidone, quetiapine, ziprasidone, aripiprazole, haloperidol), benzodiazepines. Trihexylphenidyl is a central anticholinergic drug used in Drug induced Parkinsonism.