Table 2.

Antipsychotic dosing equivalents.

Medication	CPZ equivalent dose to 100 mg CPZa	100% BNF maxb	DDD (mg)c
Chlorpromazine tablet	100	1000	300
Haloperidol tablet	2	30	8
Trifluoperazine tablet	5	50	20
Thioridazine tablet	100	150	300
Fluphenazine decanoate	13/4 weeks	50	1
Haloperidol decanoate	40/4 weeks	18	3.3
Clozapine tablet	100	900	300
Olanzapine tablet	4	20	10
Risperidone tablet	2	16	5
Quetiapine tablet	75	750	400

^aData obtained from Woods (2003); Xiang et al. (2007); Xiang et al. (2008); Buchanan et al. (2009).

^bJoint Formulary Committee and Pharmaceutical Society of Great Britain (2010).

^cWHO (2010).