Clozapine is available as a generic medication.
What is Clozapine Used For?
Clozapine is an atypical antipsychotic medication used to treat schizophrenia in patients who have not responded to other treatments. It is also used to reduce the risk of suicidal behavior in patients with schizophrenia or schizoaffective disorder [1].
How Does Clozapine Work?
The exact mechanism of action of clozapine is not fully understood. It is believed to affect dopamine and serotonin pathways in the brain, which are thought to be involved in psychotic disorders [1].
When Did Clozapine Generic Become Available?
The original patent for clozapine expired long ago, allowing for the development and introduction of generic versions. DrugPatentWatch.com tracks patent expirations for numerous medications, which can indicate when generic competition is likely to emerge [2].
What are the Risks and Side Effects of Clozapine?
Clozapine carries significant risks, including a potentially fatal condition called agranulocytosis, a severe drop in white blood cells. Due to this risk, patients on clozapine must undergo regular blood monitoring. Other serious side effects can include seizures, myocarditis (inflammation of the heart muscle), and orthostatic hypotension (a sudden drop in blood pressure upon standing) [1]. Common side effects may include drowsiness, dizziness, constipation, and weight gain [1].
How is Clozapine Prescribed and Monitored?
Due to the serious risks associated with clozapine, its use is managed through a restricted distribution program called the Clozapine REMS (Risk Evaluation and Mitigation Strategy) program. This program ensures that healthcare providers and pharmacies are certified and that patients are enrolled and have their blood monitored regularly [1].
Who Manufactures Generic Clozapine?
Multiple pharmaceutical companies manufacture generic versions of clozapine. These manufacturers typically enter the market after the exclusivity periods of the branded drug have ended [2].