What is carbamazepine ER used for?

Carbamazepine ER is FDA-approved to treat certain seizure types in epilepsy, including partial and generalized tonic-clonic seizures, and to relieve trigeminal neuralgia nerve pain. Your provider will determine whether it is appropriate for your condition.

Is carbamazepine ER the same as Tegretol XR?

Yes. Tegretol XR is the brand name for extended-release carbamazepine. Both contain the same active ingredient and release it gradually so it can be taken twice daily.

Do I need a prescription for carbamazepine ER?

Yes. Carbamazepine ER 400mg is a prescription-only medication in the United States. A licensed provider must review your health history and issue or verify a valid prescription before we can dispense it.

How does ordering and shipping work?

After you place your order, a licensed provider or pharmacist reviews your prescription and medical information. Once approved, your medication is filled and shipped from a licensed U.S. pharmacy directly to your address.

Can I stop taking carbamazepine ER suddenly?

No. Stopping carbamazepine abruptly can trigger seizures, including status epilepticus. Always talk to your provider before making any changes; doses are usually tapered gradually.

What should I avoid while taking carbamazepine ER?

Avoid alcohol and grapefruit juice, which can increase side effects or drug levels. Carbamazepine also interacts with many medications, including hormonal birth control, so share your full medication list with your provider and pharmacist.

Carbamazepine ER 400mg

Name: Carbamazepine ER 400mg
Brand: All Family Pharmacy
SKU: carbamazepine-er-400mg
Availability: InStock

Generic For: Tegretol XR

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Carbamazepine ER 400mg — All Family Pharmacy

Carbamazepine ER 400mg (Tegretol XR) is an extended-release anticonvulsant tablet used to treat certain types of seizures in epilepsy and to relieve trigeminal neuralgia nerve pain. Because it releases medication gradually, it is typically taken twice daily. After a licensed provider reviews your prescription, your order ships from a licensed U.S. pharmacy.

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Buy Carbamazepine ER 400mg (Tegretol XR) Online

An extended-release anticonvulsant for epilepsy, seizures, and trigeminal neuralgia

Medically reviewed by David Paul Mackarey, RPh, Pharmacist-in-Charge

Carbamazepine ER 400mg Quick Facts

Drug class	Anticonvulsant (antiepileptic)
Treats	Epilepsy (partial and tonic-clonic seizures), trigeminal neuralgia
Form	Tablet
Typical dosing	Take as directed by primary physician by mouth.
Prescription required	Yes — prescription only

What Is Carbamazepine ER 400mg?

Carbamazepine ER is the extended-release form of carbamazepine, the active ingredient in Tegretol XR. It is an anticonvulsant that works by reducing abnormal electrical activity in the brain and calming overactive nerve signals. It is FDA-approved to treat certain seizure types in people with epilepsy and to relieve the facial nerve pain of trigeminal neuralgia. The extended-release tablet delivers medication steadily over time and should be swallowed whole, not crushed or chewed.

What Does Carbamazepine ER 400mg Treat?

Partial seizures with complex symptomatology (psychomotor, temporal lobe)
Generalized tonic-clonic (grand mal) seizures
Mixed seizure patterns
Trigeminal neuralgia
Glossopharyngeal neuralgia

Carbamazepine ER 400mg Dosage

Epilepsy (adults): 200 mg PO twice daily initially; increase weekly by up to 200 mg/day; usual maintenance 800–1200 mg/day in 2 divided doses.
Trigeminal neuralgia (adults): 100 mg PO twice daily initially; increase by up to 200 mg/day as needed; max 1200 mg/day.
Swallow tablets whole; do not crush or chew.

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Carbamazepine ER 400mg Side Effects

Common side effects

Dizziness
Drowsiness
Unsteadiness
Nausea
Vomiting
Dry mouth
Blurred or double vision
Headache

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

Serious skin reactions (Stevens-Johnson syndrome, toxic epidermal necrolysis)
Signs of low blood counts (fever, sore throat, unusual bruising or bleeding)
Suicidal thoughts or behavior
Symptoms of low sodium (confusion, severe weakness, seizures)
Signs of liver problems (jaundice, dark urine, right upper abdominal pain)
Severe allergic reaction (swelling of face or throat, difficulty breathing)

Warnings & Interactions

Boxed warning: serious dermatologic reactions and aplastic anemia/agranulocytosis; periodic blood monitoring recommended
Genetic testing for HLA-B*1502 recommended before use in patients of Asian ancestry due to skin reaction risk
Do not use within 14 days of MAO inhibitors or with nefazodone
Contraindicated with history of bone marrow depression or hypersensitivity to carbamazepine or tricyclic antidepressants
Strong CYP3A4 inducer — interacts with many medications, including hormonal contraceptives and warfarin
May cause fetal harm; discuss pregnancy planning and contraception with your provider
Do not stop suddenly — abrupt discontinuation can trigger seizures; avoid alcohol and grapefruit juice

Tell your prescriber about all medications, supplements, and health conditions before starting carbamazepine er 400mg.