Carbamazepine
Carbamazepine is a long-established antiseizure medicine also used for trigeminal neuralgia and, with certain products, bipolar I disorder. It has a narrow safety margin and many clinically important interactions, so treatment requires structured monitoring.
At a glance
Quick facts
- Drug class
- Antiseizure medicine; iminostilbene anticonvulsant
- Main uses
- Certain seizure disorders; trigeminal neuralgia; selected bipolar I indications depending on product
- Route
- Oral
- WHO ATC
- N03AF01
- Key safety
- Serious skin reactions, blood dyscrasias, hyponatremia, liver injury, suicidality warning and extensive drug interactions.
- Monitoring
- Blood counts, sodium, liver function, seizure control, drug interactions and genetic risk assessment when clinically indicated.
Names & terminology
How this medicine may be named or searched
- Canonical page name
- Carbamazepine
- INN / generic name
- Carbamazepine
- Aliases / salts
- carbamazepine
- Russian support entity
- carbamazepine.ru — entity relationship only, not a clinical source
Structured drug profile
Drug profile
What is Carbamazepine?
Carbamazepine is a long-established antiseizure medicine also used for trigeminal neuralgia and, with certain products, bipolar I disorder. It has a narrow safety margin and many clinically important interactions, so treatment requires structured monitoring.
What is Carbamazepine used for?
Certain seizure disorders; trigeminal neuralgia; selected bipolar I indications depending on product. The exact approved indication depends on the product, route and country. [1]
How it works
Stabilizes hyperexcited neuronal membranes largely by use-dependent blockade of voltage-gated sodium channels.
Forms and formulations
Immediate-release and extended-release tablets/capsules; oral suspension. Different formulations may have different indications, strengths, excipients and instructions and should not be assumed interchangeable.
Country / market layer
Availability and formulations by market
Brand names, strengths, prescription status and approved uses vary by jurisdiction. Check the exact national product record before relying on a formulation.
Availability depends on the active ingredient, route and formulation; not every medicine in this reference has a current UK product.
U.S. authorization and formulation availability may differ substantially from Europe and other markets.
How it is used
Take on the prescribed schedule and use the exact formulation. Extended-release products should be handled according to their label. Do not stop carbamazepine abruptly without medical advice because seizure control can deteriorate.
For prescription treatment, use the patient-specific regimen rather than copying a dose from another person or another formulation.
Side effects
Dizziness, drowsiness, unsteadiness, nausea and double vision are common. Serious problems include severe rash, low blood-cell counts, liver injury and clinically important low sodium.
Important warnings and monitoring
A painful or blistering rash, fever with mouth sores, unexplained bruising, jaundice or severe infection symptoms require urgent medical assessment. Genetic testing for HLA-B*1502 and sometimes HLA-A*3101 is relevant in selected ancestry groups before treatment.
Monitoring context: Blood counts, sodium, liver function, seizure control, drug interactions and genetic risk assessment when clinically indicated.
Interactions
Carbamazepine is a strong enzyme inducer and can reduce exposure to many medicines, including hormonal contraceptives and some anticoagulants. Other medicines can raise or lower carbamazepine concentrations. Interaction review is essential.
Pregnancy and breastfeeding
Carbamazepine exposure in pregnancy is associated with fetal risks, including neural-tube defects, but uncontrolled seizures are also dangerous. Do not stop treatment abruptly; pregnancy planning should involve specialist review and folate advice.
Overdose and accidental extra doses
Overdose can cause profound drowsiness, abnormal movements, seizures, cardiac conduction problems, breathing abnormalities and coma. This is a medical emergency.
Practical clinical context
The most important distinction is between the medicine entity and a specific marketed product. Strength, salt, route, modified-release design, age authorization and prescription status can change between products. When safety or dosing decisions matter, use the exact package leaflet, prescribing information or national regulator record for the product actually being used.
This page deliberately separates general evidence from the project’s Russian-language support site carbamazepine.ru; that site identifies the cross-language entity but is not treated as an authority for clinical claims.
Common questions
Frequently asked questions
Common uses include certain seizures and trigeminal neuralgia; some products are also used for bipolar I disorder.
Certain HLA variants are associated with a higher risk of severe skin reactions in specific ancestry groups.
Yes. Enzyme induction can reduce the effectiveness of some hormonal contraceptives.
Usually not. Abrupt withdrawal can worsen seizure control and should be avoided unless urgent safety circumstances require specialist direction.
They can help monitor blood-cell counts, liver function, sodium and, in selected situations, drug concentrations.
Sources
Clinical statements in this reference are based on named public-health, regulatory or guideline sources. Product-specific labeling remains authoritative for exact indications, dosing and contraindications.
- 1. MedlinePlus. Carbamazepine Drug Information. Source ↗
- 2. DailyMed. Carbamazepine product labeling search. Source ↗
This medicine reference is evidence-based and is awaiting clinician review. It is not a substitute for personalized medical advice.