Inada and Inagaki reported dose equivalence for short-acting injectale antipsychotic agents in Japan. The authors are from Seiwa Hospital and Aoyama Gakuin University in Japan.
Drug
Route
Equivalent Dose in mg
chlorpromazine
oral
100
haloperidol
intramuscular or intravascular
1
chlorpromazine
intramuscular
33
levomepromazine
intramuscular
25
sulpiride
intramuscular
50
perphenazine
intramuscular
2
prochlorperazine
intramuscular
2.14
timiperone
intramuscular or intravascular
0.19
olanzapine
intramuscular
2.25
multiple of the equivalent dose =
= (actual dose) / (equivalent dose)
To convert to another drug in the table:
dose for new drug =
= (multiple of the equivalent dose for previous drug) * (equivalent dose for new drug)
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