About bipolar Frequently Asked Questions Tell me about Clozapine Clozapine (Clozaril) Clozapine is an antipsychotic medication used in the treatment of bipolar disorder and its brand name in the UK is Clozaril. Information relating to its use, dosage and side effects can be found on the website of the National Institute for Care and Health Excellence (NICE) - British National Formulary (BNF) Manage Cookie Preferences