Table 2 Equivalent doses for antipsychotics and benzodiazepines

Drug

Milligrams of Chlorpromazine Equivalent to 1 of Drug

FGAs

 Haloperidol

100

 Fluphenazine

100

 Trilafon

25

 Thioridazine

2

 Loxapine

20

SGAs

 Risperidone

200

 Olanzapine

40

 Aripiprazole

40

 Ziprasidone

10

 Quetiapine

1.6

 Clozapine

2.5

Drug

Milligrams of Lorazepam Equivalent to 1 of Drug

BZDs

 Diazepam

0.1

 Clonazepam

2

 Alprazolam

2