Drugs commonly used to treat acute extrapyramidal side effects

Drug Drug type Usual dosage Indications 

Benztropine Anticholinergic agent 1-2 mg po bid Dystonia, parkinsonian syndrome 

Diphenhydramine Anticholinergic agent 25-50 mg po tid Dystonia, parkinsonian syndrome 

po=oral tablets or capsules bid=twice daily iv=mtravenous tid=three times a day im=intramuscular injections. Follow with oral medication. 

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TABLE 4-3. Drugs commonly used to treat acute extrapyramidal side effects ... 

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