Olanzapine-Partial antagonist

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Olanzapine
Type antipsychotic
Group atypical AP
Other use moodstabilizer
links
ATC-code N05AH03
Medscape Olanzapine
EMEA zyprexa
PubChem 4585
PubMed Olanzapine
Drugs.com olanzapine
Kompas (Dutch) Olanzapine
Wikipedia Olanzapine
Partial antagonist

Aripiprazole
Brexpiprazole
Cariprazine

Switch medication from Olanzapine to Partial antagonist.
Partial antagonist is a collection of antipsychotic drugs having similar properties with respect to switching. A switch to member of the 'partial antagonist' group from anotherdrug should be read as partial antagonist-anotherdrug. Similarly, a switch from a member of the 'partial antagonist' group to anotherdrug should be read as anotherdrug-partial antagonist.

Nietinrijdenbord.png Stop Olanzapine
  • Week 1: approx. 75% of initial dose
  • Week 2: approx. 50% of initial dose
  • Week 3: approx. 25% of initial dose
  • Week 4: approx. 12,5% of initial dose
  • Day 28: stop
Eenrichtingbord.png Start Partial antagonist
  • Day 1-3: start 50% of target dose
  • Day 4-7: target dose
Infobord.png 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.[4]
    Anticholinerg AP naar partieel2.jpg
Nietinrijdenbord.png — Olanzapine
Eenrichtingbord.png — Partial antagonist


  1. 1.0 1.1 1.2 1.3 KNMP; Informatorium Medicamentorum 2015; Monografie "olanzapine" (Dutch)
  2. Farmacotherapeutisch Kompas; Toxicologie (dutch)
  3. Woods SW Chlorpromazine equivalent doses for the newer atypical antipsychotics; J Clin Psychiatry 2003;64:663-667
  4. Stöllberger C, Huber JO, Finsterer J, Antipsychotic drugs and QT prolongation. Int Clin Psychopharmacol. 2005 Sep;20(5):243-51.
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