Tegretol (Carbamazepine): How This Anticonvulsant and Mood Stabilizer Works, Labs, and When Telehealth Helps

Last updated: August 22, 2026

Carbamazepine is an anticonvulsant. Brand names include Tegretol, Tegretol XR, Carbatrol, Epitol, and Equetro. Clinicians use it for certain seizure types and for trigeminal neuralgia. The extended-release capsule Equetro is also labeled for acute mania and mixed episodes in bipolar I disorder. It is not a controlled substance. A licensed telehealth clinician can often continue a stable course after a full history, but new starts usually need labs, and people with ancestry from many parts of Asia need HLA-B*1502 screening first. It is not a simple pain pill.

This guide is educational. It is not a diagnosis and it is not a promise that any clinician will prescribe carbamazepine.

Looking for mood or depression care online? Klarity Health has 2,000+ licensed providers. Many visits happen by video. Coverage varies by plan. Self-pay is also an option. See online depression treatment options or browse conditions.

TLDR

• Carbamazepine reduces abnormal electrical activity in the brain. MedlinePlus lists uses for certain seizures, trigeminal neuralgia, and mania or mixed episodes in bipolar I (MedlinePlus a682237).
• The Novartis Tegretol / Tegretol XR label (DailyMed setid 8d409411, updated August 20, 2026) indicates epilepsy (partial seizures with complex symptomatology, generalized tonic-clonic, mixed patterns that include those types) and pain of true trigeminal neuralgia. Absence (petit mal) is not controlled. It is not for trivial aches (DailyMed Tegretol).
• NAMI describes carbamazepine as a mood stabilizer approved for bipolar I, epilepsy, and trigeminal neuralgia. Brands: Tegretol tablets 200 mg and suspension 100 mg/5 mL; Tegretol XR 100/200/400 mg; Carbatrol and Equetro ER capsules 100/200/300 mg; Epitol 200 mg tablets. Usual daily range often 200 to 1600 mg. Several weeks to judge mood effect (NAMI).
• Adults and children over 12 (epilepsy, Tegretol label): start 200 mg twice daily (tablets/XR) or 1 teaspoon four times daily (suspension), 400 mg/day. Raise weekly by up to 200 mg/day. Generally do not exceed 1000 mg/day ages 12 to 15, or 1200 mg/day above 15. Rare adult use up to 1600 mg/day. Maintenance is often 800 to 1200 mg/day. Therapeutic total plasma range commonly cited: 4 to 12 mcg/mL (DailyMed).
• Boxed: serious skin reactions (SJS/TEN), about 1 to 6 per 10,000 new users in mainly Caucasian populations and about 10 times higher in some Asian countries. Screen for HLA-B*1502 before start in genetically at-risk Asian ancestry groups. Do not start if the allele is present unless benefit clearly outweighs risk. Also boxed: aplastic anemia and agranulocytosis (risk about 5 to 8 times the general population; baseline CBC) (DailyMed; NAMI).
• Do not use after bone marrow depression, with known hypersensitivity, or with sensitivity to tricyclic compounds (amitriptyline, desipramine, imipramine, nortriptyline, and others). Stop MAOIs at least 14 days before. Nefazodone is contraindicated. Strong CYP3A4 inducer: it can lower oral contraceptives, warfarin, many antipsychotics, and lamotrigine. Grapefruit juice can raise levels (DailyMed; NAMI).
• Not a controlled substance. Telehealth can follow many stable patients once labs and genetics are in the chart. New rash, fever with sore throat, unusual bruising, severe unsteadiness, pregnancy planning, or seizure breakthrough need prompt in-person or emergency care.

Table of contents

• What carbamazepine is
• How it works
• Approved and related uses
• Carbamazepine dosage
• Labs and levels
• Side effects
• Warnings and who should not take it
• Interactions
• When telehealth is enough
• How a Klarity visit fits
• FAQ

What carbamazepine is

Carbamazepine USP is a white to off-white powder. DailyMed classifies Tegretol as an anticonvulsant and a specific analgesic for trigeminal neuralgia. Forms on the Novartis label: 200 mg tablets, Tegretol XR 100/200/400 mg, and suspension 100 mg/5 mL. DEA schedule: none. Label updated August 20, 2026 (DailyMed).

NAMI lists additional ER capsules (Carbatrol, Equetro) at 100, 200, and 300 mg, plus Epitol 200 mg tablets. Equetro is the product most often discussed for bipolar I mania and mixed episodes. Product names are not interchangeable without a clinician and pharmacist check, because release systems differ (NAMI).

Related Klarity guides: Depakote / divalproex, Lamictal / lamotrigine, Seroquel / quetiapine, and Abilify / aripiprazole.

How it works

MedlinePlus groups carbamazepine with anticonvulsants. It reduces abnormal electrical activity to treat seizures and mania. For trigeminal neuralgia, it changes how the body senses pain (MedlinePlus).

NAMI frames it as a mood stabilizer that works in the brain. Bipolar I includes depression and/or mania. Missing doses can raise relapse risk. Do not stop suddenly. A clinician should set the taper if you come off it (NAMI).

Approved and related uses

Tegretol epilepsy indications on DailyMed:

• Partial seizures with complex symptomatology (psychomotor, temporal lobe). These patients often improve more than other types.
• Generalized tonic-clonic (grand mal) seizures.
• Mixed seizure patterns that include the above or other partial or generalized seizures. Absence (petit mal) does not appear controlled.

Tegretol is also indicated for pain of true trigeminal neuralgia. Glossopharyngeal neuralgia has reported benefit. It is not a simple analgesic (DailyMed).

MedlinePlus and NAMI also list mania or mixed episodes in bipolar I. That psychiatric use is the Equetro / mood-stabilizer conversation, not a reason to treat everyday irritability with Tegretol on your own (MedlinePlus; NAMI).

NAMI notes possible off-label use for behavioral or psychological symptoms of dementia. Off-label needs a documented rationale and a clear discussion of limits (NAMI).

Carbamazepine dosage

Follow the written prescription. Highlights from the Tegretol label and NAMI:

• Take tablets and XR with meals. Regular tablets and suspension: usually 2 to 4 times daily. XR tablets: usually twice daily with meals. ER capsules: usually twice daily with or without meals. NAMI: swallow ER capsules whole or sprinkle on applesauce or pudding and eat at once. Do not chew beads (MedlinePlus; NAMI).
• Adults and children over 12 (epilepsy): start 200 mg twice daily (tablets/XR) or 1 teaspoon four times daily (400 mg/day). Raise weekly by up to 200 mg/day. Caps: 1000 mg/day ages 12 to 15; 1200 mg/day above 15; rare adults 1600 mg/day. Maintenance often 800 to 1200 mg/day (DailyMed).
• Children 6 to 12 (epilepsy): start 100 mg twice daily or 1/2 teaspoon four times daily (200 mg/day). Raise weekly by up to 100 mg/day. Generally do not exceed 1000 mg/day. Maintenance often 400 to 800 mg/day.
• Trigeminal neuralgia: start 100 mg twice daily (200 mg/day). Add up to 200 mg/day in 100 mg every-12-hour steps. DailyMed table lists 1200 mg/24 hr as the listed upper figure for that indication.
• NAMI mood-stabilizer range: typically start low and raise over weeks; often 200 to 1600 mg/day, sometimes more based on symptoms and levels.

Autoinduction: carbamazepine induces its own metabolism. Levels can fall in the first weeks even if the dose stays the same. Clinicians often recheck levels after titration, not only on day 3.

Labs and levels

DailyMed: complete pretreatment hematologic testing as a baseline. If WBC or platelets drop, monitor closely. Stop if significant bone marrow depression appears. Generally accepted therapeutic range for total carbamazepine: 4 to 12 mcg/mL (same range cited for children and adults) (DailyMed).

NAMI: periodic blood samples for drug level and blood counts. Also watch sodium. Low sodium can look like nausea, tiredness, headache, confusion, or more seizures (NAMI).

HLA-B*1502: screen before the first dose in genetically at-risk Asian ancestry populations. A positive test usually means do not start Tegretol (DailyMed).

Side effects

Common (NAMI): dizziness, drowsiness, unsteadiness, nausea or vomiting, dry mouth, constipation, blurry or double vision.

Serious: SJS/TEN (painful rash, blistering, mouth sores, fever), aplastic anemia or agranulocytosis (fever, sore throat that will not clear, unusual bleeding or bruising, tiny red or purple spots), hyponatremia, swelling of face or tongue, trouble breathing, suicidal thoughts. Antiepileptic drugs as a class have been linked to suicidal thoughts or behavior about twice as often as placebo, about 1 in 500 patients in that analysis (NAMI; MedlinePlus).

If you or someone with you is in crisis, call or text 988 in the United States, or go to the nearest emergency department.

Warnings and who should not take it

Boxed dermatologic warning: SJS and TEN. Risk 1 to 6 per 10,000 new users in mainly Caucasian countries; about 10-fold higher in some Asian countries. HLA-B*1502 is found almost exclusively across broad areas of Asia. Screen those patients before start (DailyMed).

Boxed hematologic warning: aplastic anemia and agranulocytosis. Case-control data: risk 5 to 8 times the general population. Background rates are still low (about six agranulocytosis and two aplastic anemia cases per million people per year untreated). Most mild WBC drops do not become those rare events. Still get a baseline CBC (DailyMed).

Do not use with prior bone marrow depression, hypersensitivity, TCA sensitivity, or nefazodone. Separate MAOIs by at least 14 days. Pregnancy: NAMI associates carbamazepine with higher risk of defects of the head and face, fingernails, and developmental delay. Do not stop during pregnancy without a plan. It passes into breast milk. Discuss contraception: carbamazepine can lower oral contraceptive levels (NAMI; DailyMed).

Interactions

Carbamazepine is a strong inducer. NAMI lists drugs that can raise carbamazepine (valproate, some macrolides and ciprofloxacin, cimetidine, omeprazole, azole antifungals, diltiazem, verapamil, trazodone, nefazodone) and drugs that can lower it (phenytoin, phenobarbital, primidone, rifampin). Carbamazepine can lower oral contraceptives, lurasidone, aripiprazole, alprazolam, escitalopram, trazodone, tacrolimus, cyclosporine, simvastatin, atorvastatin, warfarin, phenytoin, phenobarbital, valproate, and lamotrigine (NAMI).

Avoid large amounts of fresh grapefruit juice (NAMI: 8 ounces or more). Avoid alcohol. Give your clinician a full list of prescriptions, OTCs, and herbals.

When telehealth is enough

Video care often fits refill and side-effect checks when the dose is stable, recent CBC and level (and HLA result if you needed one) are on file, and you have no new rash, fever, bruising, pregnancy, or seizure change. A new start usually needs coordinated labs. Acute mania with safety risk, status epilepticus, suspected SJS, or overdose is emergency care, not a routine video slot.

How a Klarity visit fits

Klarity Health connects adults with 2,000+ licensed providers for telehealth evaluation of depression, bipolar spectrum symptoms, anxiety, and related medication questions. A visit does not guarantee a carbamazepine prescription. Coverage may vary by plan and state. Verify benefits before you book. Self-pay is often available.

See online depression treatment options · Browse conditions

Disclaimer: Insurance coverage varies by plan, formulary, and prior authorization. This article does not confirm that your plan will pay for carbamazepine, genetic testing, or a Klarity visit. Confirm benefits with your insurer. This is not medical advice.

FAQ

Is Tegretol the same as carbamazepine?

Tegretol is a brand of carbamazepine. Generics and other brands (Tegretol XR, Carbatrol, Equetro, Epitol) use the same active drug with different release systems. Do not switch forms without checking with the prescriber and pharmacist.

Is carbamazepine a controlled substance?

No. DailyMed lists DEA schedule as none. Telehealth rules are those of ordinary prescription medicines, plus lab and genetic safety steps.

How long until it works?

NAMI: several weeks before mood changes are large enough to judge. Seizure and facial-pain timelines differ. Do not raise the dose on your own.

Why do I need a genetic test?

HLA-B*1502 strongly associates with SJS/TEN in many Asian ancestry groups. The boxed warning tells clinicians to screen those patients before the first dose.

Can I take it with birth control pills?

Carbamazepine can lower oral contraceptive levels. Ask about a backup or a different method before you rely on the pill alone.

If you are in crisis, call or text 988. For poisoning, 1-800-222-1222.