Related Experiment Video
Updated: Aug 7, 2026
10:17
The Tail Suspension Test
Published on: January 28, 2012
Lithium and clozapine rechallenge: a retrospective case analysis
Richard A Kanaan1, Robert W Kerwin
1Department of Psychological Medicine, King's College London, Institute of Psychiatry, United Kingdom. r.kanaan@iop.kcl.ac.uk
The Journal of Clinical Psychiatry
|July 18, 2006
Summary
Lithium coprescription during clozapine rechallenge may prevent neutropenia, with a significantly lower recurrence rate than national averages. However, vigilance is needed to detect potential masked blood dyscrasias.
Area of Science:
- Pharmacology
- Hematology
- Psychiatry
Background:
- Clozapine is an effective antipsychotic, but its use is limited by neutropenia risk.
- Lithium is sometimes used during clozapine rechallenge to prevent neutropenia.
- Concerns exist that lithium may mask neutropenia onset.
Observation:
- A retrospective analysis of 25 patients undergoing clozapine rechallenge with lithium coprescription was conducted.
- The study period was September 1998 to September 2003 at a tertiary referral center.
- Patients had a history of clozapine-induced blood dyscrasia.
Findings:
- Only 4% of patients experienced a second neutropenia or agranulocytosis, significantly lower than the UK national rate (21.2%).
- Recurrent blood dyscrasias were not more common or severe.
- One case suggested lithium might mask neutropenia.
Implications:
- Lithium appears useful in preventing neutropenia during clozapine rechallenge.
- Increased monitoring is necessary to identify masked blood dyscrasias.
- This supports cautious use of lithium in clozapine rechallenge protocols.
Related Concept Videos
01:26Psychosis: Goals of Pharmacotherapy
Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation. For...
01:24Mania and Antimanic Drugs: Overview
Mania, a psychological condition characterized by elevated mood, increased energy, and reduced sleep need, is part of the bipolar disorder cycle. The exact cause of mania isn't entirely known, but it is thought to be a combination of genetic, environmental, and neurological factors. Bipolar disorder involves alternating manic and depressive episodes. Mood stabilizers like lithium, antipsychotics, and anticonvulsants help manage these episodes. Lithium carbonate is particularly effective as a...
01:28Psychosis and Antipsychotic Drugs: Overview
The term "psychosis" refers to a spectrum of mental disorders characterized by abnormal thoughts, perceptions, and behaviors. It can manifest as mood disorders, dementia, delirium with psychotic features, substance-induced psychosis with psychotic features, brief psychotic disorder, delusional disorder, schizoaffective disorder, and schizophrenia. Among all these disorders, schizophrenia is the most common psychotic disorder, affecting 1% of the worldwide population. Psychotic symptoms in all...
01:28Drug Therapy
The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications
Antianxiety Medications
01:21Antipsychotic Drugs: Typical and Atypical Agents
Antipsychotic drugs are classified into first-generation (typical) drugs including phenothiazines; and second-generation (atypical) drugs. Chlorpromazine hydrochloride (Thorazine), a phenothiazine derivative, broadly impacts the central, autonomic, and endocrine systems. This drug, along with typical agents like haloperidol (Haldol), primarily works by antagonizing D2 receptors, thus reducing dopaminergic neurotransmission. However, typical antipsychotics can cause side effects such as sedation...
01:23Antidepressant Drugs: MAOIs and Other Agents
Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...