Carbamazepine

generic for Epitol

Carbamazepine Side Effects

See also Warning section.

Nausea, vomiting, dizziness, drowsiness, constipation, dry mouth, or unsteadiness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including: headaches that are severe or don't go away, signs of liver problems (such as nausea/vomiting that doesn't stop, loss of appetite, stomach/abdominal pain, yellowing eyes/skin, dark urine), signs of kidney problems (such as change in the amount of urine), mouth sores, fainting, fast/slow/irregular heartbeat, unusual eye movements (nystagmus), vision changes (such as blurred vision), joint pain, swelling of the ankles/feet, pain/redness/swelling of the arms or legs, numbness/tingling of the hands/feet, signs of low levels of sodium in the blood (such as extreme drowsiness, mental/mood changes including confusion, seizures).

A small number of people who take anticonvulsants for any condition (such as seizure, bipolar disorder, pain) may experience depression, suicidal thoughts/attempts, or other mental/mood problems. Tell your doctor right away if you or your family/caregiver notice any unusual/sudden changes in your mood, thoughts, or behavior including signs of depression, suicidal thoughts/attempts, thoughts about harming yourself.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
  • non-infective meningitis
  • SIADH syndrome
  • hypercholesterolemia
  • hypocalcemia
  • hyponatremia
  • porphyria
  • acute intermittent porphyria
  • pancytopenia
  • bone marrow depression
  • aplastic anemia
  • anemia
  • purpura
  • thrombocytopenic disorder
  • agranulocytosis
  • leukopenia
  • eosinophilia
  • leukocytosis
  • acute confusion
  • suicidal
  • suicidal ideation
  • depression
  • behavioral disorders
  • neuroleptic malignant syndrome
  • peripheral neuropathy
  • diplopia
  • blurred vision
  • conjunctivitis
  • nystagmus
  • tinnitus
  • hyperacusis
  • hypertension
  • atrioventricular block
  • cardiac arrhythmia
  • chronic heart failure
  • thromboembolic disorder
  • thrombophlebitis
  • hypotension
  • hypersensitivity pneumonitis
  • xerostomia
  • stomatitis
  • glossitis
  • gastrointestinal irritation
  • constipation
  • hepatic failure
  • hepatitis
  • obstructive hyperbilirubinemia
  • cholestasis
  • nephritis
  • renal failure
  • kidney disease with reduction in glomerular filtration rate (GFR)
  • erectile dysfunction
  • skin photosensitivity
  • erythema multiforme
  • toxic epidermal necrolysis
  • Stevens-Johnson syndrome
  • exfoliative dermatitis
  • pruritus of skin
  • nail disorders
  • alopecia
  • hirsutism
  • urticaria
  • dyschromia
  • lupus-like syndrome
  • arthralgia
  • myalgia
  • cramps in legs
  • osteopenia
  • drowsy
  • syncope
  • vertigo
  • dizziness
  • fever
  • fatigue
  • hyperhidrosis
  • muscle fasciculation
  • ataxia
  • skin rash
  • edema
  • anorexia
  • headache disorder
  • dysarthria
  • lymphadenopathy
  • nausea
  • vomiting
  • diarrhea
  • urinary retention
  • increased urinary frequency
  • abnormal hepatic function tests
  • anaphylaxis
  • angioedema
  • paresthesia
  • general weakness
  • acute abdominal pain
  • hypogammaglobulinemia
  • pancreatitis
  • unsteady gait
  • acute generalized exanthematous pustulosis
  • DRESS syndrome

Drug Interactions

See also How to Use section.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Some products that may interact with this drug include: certain azole antifungals (isavuconazonium, voriconazole), orlistat.

Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Ask your doctor when to start or stop taking this medication.

Other medications can affect the removal of carbamazepine from your body, which may affect how carbamazepine works. Examples include macrolide antibiotics (such as erythromycin), rifamycins (such as rifabutin), St. John's wort, among others.

Carbamazepine can speed up the removal of other drugs from your body, which may affect how they work. Examples of affected drugs include artemether/lumefantrine, boceprevir, certain drugs used to prevent blood clots (anticoagulants such as apixaban, rivaroxaban), certain calcium channel blockers (such as nifedipine, nimodipine), nefazodone, HIV NNRTIs (such as delavirdine, efavirenz, etravirine, rilpivirine), praziquantel, ranolazine, among others.

This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use reliable backup birth control methods while taking this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well.

Tell your doctor or pharmacist if you are taking other products that cause drowsiness including alcohol, marijuana (cannabis), antihistamines (such as cetirizine, diphenhydramine), drugs for sleep or anxiety (such as alprazolam, diazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), and opioid pain relievers (such as codeine, hydrocodone).

Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.

This medication may interfere with certain lab tests (such as thyroid function, some pregnancy tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.