Difference between revisions of "Haloperidol-Clozapine"

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* test for congress
 
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Revision as of 08:12, 31 March 2011

Haloperidol
Type Antipsychotic
Group Butyrophenones
links
ATC-code N05AD01
Medscape Haloperidol
PubChem 3559
PubMed Haloperidol
Drugs.com haloperidol
Kompas (Dutch) Haloperidol
Wikipedia Haloperidol
Clozapine
Type Antipsychotic
Group Atypical AP
links
Medscape Clozapine
PubChem 2818
PubMed Clozapine
Kompas (Dutch) Clozapine
Wikipedia Clozapine

Switch medication from Haloperidol to Clozapine.[5] [6]

Nietinrijdenbord.png Stop Haloperidol
  • Day 1-4: approx. 75% of initial dose
  • Day 5-8: approx. 50% of initial dose
  • Day 9-12: approx. 25% of initial dose
  • Day 13: stop
Eenrichtingbord.png Start Clozapine
  • Day 1: start with 12,5 mg at night
  • Day 2: 25 mg in divided doses
  • Day 3-15: increase daily dose every 1-2 day(s) with 25 mg
  • Day 16-28: if necessary, increase dose with 50-100 mg/week
  • Low dose in the morning, high dose at night (twice daily dosage)
  • Increments are dependent on the status of patient
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.[7]
  • test for congress
    Stopstandaardstartclozapine.jpg
Nietinrijdenbord.png — Haloperidol
Eenrichtingbord.png — Clozapine


  1. WHO Collaborating Centre for Drug Statistics Methodology ATC=N05AD01
  2. 2.0 2.1 2.2 KNMP; Informatorium Medicamentorum 2023; Monografie "haloperidol" (Dutch)
  3. 3.0 3.1 The Lundbeck Institute; Psychotropics; Terminal Plasma Half-lives
  4. 4.0 4.1 Farmacotherapeutisch Kompas; Inleidende Tekst Antipsychotica (dutch)
  5. 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
  6. Stahl, S. M. (2013). Stahl's essential psychopharmacology: Neuroscientific basis and practical applications (4th ed.). Cambridge University Press.
  7. Stöllberger C, Huber JO, Finsterer J, Antipsychotic drugs and QT prolongation. Int Clin Psychopharmacol. 2005 Sep;20(5):243-51.
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