Inada and Inagaki reported dose equivalence for drugs used to treat psychosis in Japan. The authors are from Seiwa Hospital and Aoyama Gakuin University in Japan.
Drug
Equivalent Dose
aripiprazole
4
blonanserin
4
bromperidol
2
carpipramine
100
chlorpromazine
100
clocapramine
40
clotiapine
40
clozapine
50
fluphenazine
2
haloperidol
2
levomepromazine
100
moperone
12.5
mosapramine
33
nemonapride
4.5
olanzapine
2.5
oxypertine
80
paliperidone
1.5
perazine
100
perospirone
8
perphenazine
10
pimozide
4
pipamperone
200
prochlorperazine
15
propericiazine
20
quetiapine
66
reserpine
0.15
risperidone
1
spiperone
1
sulpiride
200
sultropride
200
thioridazine
100
tiapride
100
timiperone
1.3
thiothixene
3.3
trifluoperazine
5
zotepine
66
where:
• Carpipramine, clotiapine, perazine, thioridazine, thiothixene and trifluoperazine are no longer available in Japan.
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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