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Switch medication from Olanzapine to Haloperidol_LA.[7] [8]
Stop Olanzapine - Week 1-3: approx. 75% of initial dose
- Week 4-6: approx. 50% of initial dose
- Week 7-9: approx. 25% of initial dose
- Week 10: stop
Start Haloperidol_LA- Day 1: Start depot according general dosing advice (Dotted line in graph)
More information- During this switch you could monitor ECG, especially in patients prone to QT-conduction problems.
- There is a possibility of QT interval prolongation.[9]
- Alternatively, first switch to oral form and then switch to depot to manage possible (adverse) reactions. With a direct switch to a depot it is advisable to administer a low testdose in order to exclude adverse reactions.
— Olanzapine — Haloperidol_LA
- ↑ 1.0 1.1 1.2 1.3 KNMP; Informatorium Medicamentorum 2023; Monografie "olanzapine" (Dutch)
- ↑ Farmacotherapeutisch Kompas; Toxicologie (dutch)
- ↑ Woods SW Chlorpromazine equivalent doses for the newer atypical antipsychotics; J Clin Psychiatry 2003;64:663-667
- ↑ WHO Collaborating Centre for Drug Statistics Methodology ATC=N05AD01
- ↑ 5.0 5.1 The Lundbeck Institute; Psychotropics; Terminal Plasma Half-lives
- ↑ 6.0 6.1 Farmacotherapeutisch Kompas; Inleidende Tekst Antipsychotica (dutch)
- ↑ Switches are based on literature references on this page and expert opinions of the authors. The authors have used pharmacokinetic and receptor affinity properties to determine the switch schedules
- ↑ Stahl, S. M. (2013). Stahl's essential psychopharmacology: Neuroscientific basis and practical applications (4th ed.). Cambridge University Press.
- ↑ Stöllberger C, Huber JO, Finsterer J, Antipsychotic drugs and QT prolongation. Int Clin Psychopharmacol. 2005 Sep;20(5):243-51.
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