Carbamazepine
Tegretol belongs to a group of antiepileptic medicines (medicines used to treat epileptic seizures), but its mechanism of action also allows it to be used in other diseases.
Epilepsy is characterized by the patient experiencing seizures.
Seizures result from temporary disturbances in the bioelectrical function of the brain, resulting in excessive and very violent discharge of a group of nerve cells.
Tegretol regulates nerve conduction in nerve cells.
Indications for use:
Tegretol can be used both as a single medicine and in combination with other medicines.
Tegretol is usually ineffective in absence seizures (petit mal) and myoclonic seizures.
Tegretol can only be used after a thorough medical examination.
The risk of severe skin reactions in patients of Chinese or Thai origin associated with carbamazepine can be predicted by testing a blood sample from these patients. The doctor will inform if a blood test is necessary before starting treatment with Tegretol.
If any of the above points apply to the patient, they should tell their doctor
immediately.
Before starting to take Tegretol, the patient should discuss it with their doctor or pharmacist.
Tegretol should only be taken under close medical supervision:
The patient should seek medical advice immediatelyif they experience any of the following symptoms while being treated with Tegretol:
Do not stop taking Tegretol without consulting a doctor first. Sudden withdrawal of the medicine may cause a sudden increase in seizures.
Tegretol can be used in children and elderly patients, provided that the doctor's instructions are followed. The doctor will inform about specific instructions, e.g. the need to carefully follow the dosage instructions and the need for close monitoring of the patient (see also "3. How to take Tegretol" and "4. Possible side effects").
The patient should tell their doctor or pharmacist about all medicines they are currently taking or have recently taken, as well as any medicines they plan to take. This is especially important for Tegretol, as many different medicines can affect its action.
Sometimes it may be necessary to change the dosage or stop taking some of the medicines.
Hormonal contraceptives, e.g. pills, patches, injections, or implants
Tegretol may affect the action of hormonal contraceptives and reduce their effectiveness in preventing pregnancy. The patient should discuss with their doctor the most suitable type of contraception during Tegretol therapy. In women taking hormonal contraceptives at the same time as Tegretol, irregular menstrual bleeding may occur.
Medicines that may interact with Tegretol (and vice versa):
The patient should be particularly careful when taking Tegretol with levetiracetam, isoniazid, lithium salts, or metoclopramide.
During treatment with Tegretol, the patient should not drink alcohol.
The patient should not drink grapefruit juice or eat grapefruit, as it may increase the effect of Tegretol. Other juices, such as orange or apple, do not have this effect.
If the patient is pregnant or breastfeeding, thinks they may be pregnant, or plans to have a child, they should consult their doctor or pharmacist before taking this medicine.
Tegretol may cause serious birth defects. If the patient takes Tegretol during pregnancy, the risk of birth defects in the child is even three times higher than in women who do not take antiepileptic medicines. Serious birth defects have been reported, including neural tube defects (spina bifida), facial defects such as cleft lip and palate, head defects, heart defects, and genital defects. If the patient takes Tegretol during pregnancy, the unborn child should be closely monitored.
In infants born to mothers who took Tegretol during pregnancy, developmental problems (brain development) have been reported. Some studies have shown that carbamazepine has a negative effect on the development of the nervous system in children exposed to carbamazepine in the womb, while others have not found such an effect. The effect on neurological development cannot be ruled out.
If the patient is of childbearing age and does not plan to become pregnant, they should use effective contraception during Tegretol therapy. Tegretol may affect the action of hormonal contraceptives, such as birth control pills, and reduce their effectiveness in preventing pregnancy. The patient should discuss with their doctor the most suitable type of contraception during Tegretol therapy. If the patient stops taking Tegretol, they should continue to use effective contraception for another 2 weeks after stopping the medicine.
If the patient is of childbearing age and plans to become pregnant, they should consult their doctor before stopping contraception and before becoming pregnant, so that the doctor can change the treatment to another one that is safe for the unborn child.
If the patient is or thinks they may be pregnant, they should tell their doctor immediately. The patient should not stop taking Tegretol until they have discussed it with their doctor. Stopping Tegretol without consulting a doctor may cause seizures, which can be dangerous for the patient and their unborn child. The doctor may decide to change the treatment.
If the patient takes Tegretol during pregnancy, there is also a risk of bleeding problems in the patient shortly after delivery. The doctor may prescribe a medicine to the patient and the baby to prevent this .
It is very important to control seizures during pregnancy. However, if the patient takes antiepileptic medicines during pregnancy, there is a risk to the child.
The doctor will discuss with the patient the risk of taking Tegretol during pregnancy.
The patient should not stop taking Tegretol without consulting their doctor first.
The patient should inform their doctor about breastfeeding. The active substance of Tegretol passes into breast milk. If the doctor agrees, the patient can continue breastfeeding. However, in this special case, the baby should be carefully monitored to avoid side effects.
If side effects occur, such as the baby becoming very sleepy, the patient should stop breastfeeding and contact their doctor .
There are very rare reports of fertility disorders in men and/or spermatogenesis disorders.
The patient should use effective contraception during therapy and for 2 weeks after taking the last dose of Tegretol.
In women taking hormonal contraceptives (birth control) at the same time as Tegretol, irregular menstrual bleeding may occur. The effectiveness of hormonal contraceptives may be reduced while taking Tegretol, so the patient should use other or additional non-hormonal methods of contraception.
Tegretol may cause drowsiness, dizziness, or vision disturbances, especially at the beginning of treatment or when increasing the dose. If the patient experiences such symptoms, they should not drive a car or operate machines or perform other activities that require increased attention.
Tegretol oral suspension contains methyl parahydroxybenzoate and propyl parahydroxybenzoate, which may cause allergic reactions (possible late reactions).
Tegretol also contains sorbitol (250 mg/mL). Sorbitol is a source of fructose. If the patient has previously been diagnosed with intolerance to some sugars or has been diagnosed with hereditary fructose intolerance, a rare genetic disorder in which the patient's body does not break down fructose, the patient should contact their doctor before taking the medicine or giving it to their child. Sorbitol may cause gastrointestinal discomfort and may have a mild laxative effect.
The medicine contains less than 1 mmol (23 mg) of sodium per 1 mL, i.e. the medicine is considered "sodium-free".
Tegretol contains 25 mg of propylene glycol in each milliliter. Before administering the medicine to a child under 4 weeks of age, the patient should contact their doctor or pharmacist, especially if the child is taking other medicines containing propylene glycol or alcohol. Before administering the medicine to a child under 5 years of age, the patient should contact their doctor or pharmacist, especially if the child is taking other medicines containing propylene glycol or alcohol. Patients with liver or kidney function disorders should not take this medicine without their doctor's recommendation. The doctor may decide to perform additional tests on such patients.
This medicine should always be taken as directed by the doctor. If the patient has any doubts, they should consult their doctor or pharmacist. The patient should not exceed the recommended dose prescribed by the doctor.
The patient should not stop taking Tegretol suddenly without consulting their doctor first.
Tegretol oral suspension can be taken during or after a meal or between meals. The suspension should be shaken before use.
The prescribed dose of Tegretol in the form of oral suspension causes higher maximum concentrations in the blood than the same dose in the form of tablets, and therefore the doctor will recommend starting treatment with small doses, which will then be gradually increased.
Switching from tablets to suspension: The doctor will recommend the same amount of medicine (in mg per day), but in smaller single doses, increasing the frequency of administration, e.g. recommending taking the suspension three times a day instead of tablets twice a day.
The doctor will exercise particular caution when adjusting the dosage for elderly patients.
1 measuring cup of the medicine (5 mL), attached to the packaging, is 100 mg of carbamazepine.
Recommended dose
Treatment starts with a small daily dose, and the doctor will gradually increase the dose until the optimal effect is achieved.
The doctor may order a blood test to determine the concentration of the medicine in the blood, as this may be helpful in determining the optimal dosage.
If Tegretol is to be added to the existing antiepileptic treatment regimen, the doctor will introduce the medicine gradually, maintaining or, if necessary, modifying the dosage of the other antiepileptic medicines.
The initial dose is 100 mg to 200 mg once or twice a day; the doctor will gradually increase the dose until the optimal therapeutic effect is achieved - usually up to 400 mg 2 to 3 times a day. In some patients, it may be necessary to take a dose of 1600 mg, and even 2000 mg per day.
In children under 4 years of age, the recommended initial dose is 20 mg to 60 mg per day, and may be increased by 20 mg to 60 mg every other day.
In children over 4 years of age, treatment with carbamazepine can be started at a dose of 100 mg per day, with the dose increased by 100 mg at weekly intervals.
Maintenance dose: 10 mg to 20 mg/kg body weight per day, in divided doses, e.g.:
up to 1 year of age - 100 mg to 200 mg per day, i.e. 1 to 2 measuring cups of oral suspension;
1 to 5 years - 200 mg to 400 mg per day, i.e. 1 to 2 measuring cups of oral suspension 2 times a day;
6 to 10 years - 400 mg to 600 mg per day, i.e. 2 measuring cups of oral suspension 2 to 3 times a day;
11 to 15 years - 600 mg to 1000 mg per day, i.e. 2 to 3 measuring cups of oral suspension 3 times a day (plus an additional 5 mL measuring cup in case of a 1000 mg dose).
>15 years - 800 mg to 1200 mg per day, i.e. 2 to 3 measuring cups of oral suspension 4 times a day (the same dose as for adults)
Maximum recommended doses:
up to 6 years: 35 mg/kg body weight per day
6 to 15 years: 1000 mg per day
>15 years: 1200 mg per day
Dose range: approximately 400 mg to 1600 mg per day, usually 400 mg to 600 mg per day, in 2 to 3 divided doses. In the treatment of acute manic states, the doctor will increase the dose fairly quickly, while in the prevention of bipolar disorders, the dose increase will be slower to ensure optimal tolerance of the medicine.
Average dosage: 200 mg 3 times a day. In severe cases, the doctor may increase the dose in the first few days (e.g. up to 400 mg 3 times a day). In the initial period of treatment, when the symptoms of withdrawal syndrome are most severe, the doctor may administer Tegretol in combination with sedative medicines (e.g. chlormethiazole, chlordiazepoxide). After the acute phase has passed, treatment will continue with Tegretol only.
Initial dose 200 mg to 400 mg per day will be gradually increased by the doctor until the pain subsides (usually 200 mg 3 to 4 times a day). The maximum dose is 1200 mg per day.
Then the doctor will gradually reduce the dose to the smallest possible maintenance dose. In elderly patients, treatment starts with a dose of 100 mg 2 times a day.
If the patient feels that the effect of Tegretol is too strong or too weak, they should consult their doctor.
If the patient has taken a higher dose of Tegretol than recommended, they should immediately consult their doctoror go to the emergency room of the nearest hospital. The patient may need to be monitored.
If the patient experiences breathing problems, rapid and irregular heartbeat, loss of consciousness, fainting, tremors, malaise, and/or vomiting, they should immediately stop taking Tegretol and inform their doctor.
If the patient misses a dose, they should take it as soon as possible. However, if it is almost time for the next dose, the patient should not take the missed dose, but take the next dose at the usual time. The patient should not take a double dose to make up for the missed dose.
Like all medicines, Tegretol can cause side effects, although not everybody gets them.
Most of these side effects are mild to moderate and usually disappear after a few days of therapy.
Some side effects can be seriousand may affect less than 1 in 1000 patients
immediate medical attention):
Very common: may affect more than 1 in 10 patients
loss of coordination, skin inflammation with itching rash and redness, itching rash, vomiting, nausea, dizziness, drowsiness, fatigue, leukopenia.
Common: may affect less than 1 in 10 patients
swelling around the ankles, feet, or legs, fluid retention, weight gain, headache, dry mouth, double vision, blurred vision, thrombocytopenia, eosinophilia.
Uncommon: may affect less than 1 in 100 patients
abnormal involuntary movements, such as tremors, asterixis (flapping of the hands), dystonia (twisting and bending of different parts of the body), tics, oculogyric crisis, diarrhea, constipation, exfoliative dermatitis.
Rare: may affect less than 1 in 1000 patients
itching, swollen lymph nodes, leukocytosis, multi-organ hypersensitivity, folic acid deficiency, decreased appetite, hallucinations, depression, aggression, anxiety, agitation, confusion, uncoordinated and involuntary movements of the limbs and body, uncontrolled eye movements, speech difficulties or slurred speech, abnormal muscle movements (chorea occurring alternately with slow twisting movements of the body), sensory disturbances, numbness, tingling in the hands and feet, a feeling of electric shock, weakness, conduction disorders, hypertension or hypotension, abdominal pain, jaundice, liver failure, blisters on the mucous membranes of the mouth and genitals (Stevens-Johnson syndrome), toxic epidermal necrolysis, hypersensitivity to light, erythema multiforme, lupus-like syndrome, skin pigmentation disorders, purpura, acne, excessive sweating, hair loss, hirsutism, bone metabolism disorders leading to demineralization of bones/osteoporosis, joint pain, muscle pain, interstitial nephritis, kidney failure, kidney function disorders (e.g. proteinuria, hematuria, oliguria, and increased blood urea nitrogen/azotemia), frequent urination, sudden decrease in urine output, sexual disorders/erectile dysfunction, spermatogenesis disorders (reduced sperm count or motility), increased thyroid-stimulating hormone (TSH) in the blood.
Very rare: may affect less than 1 in 10,000 patients
abnormal blood test results, anemia, immunoglobulin deficiency, unexpected milk secretion from the breasts, breast enlargement in men, disorders of porphyrin production, a dye important for liver function and blood formation, anxiety, changes in mental state, taste disturbances, cataract, conjunctivitis, hearing disturbances (tinnitus, hyperacusis, hearing loss, change in perception of high tones), chest pain, extremely slow heartbeats, worsening of coronary artery disease, circulatory collapse, thrombophlebitis, swelling and redness along the vein, which becomes very sensitive to touch, often felt as painful (thrombophlebitis), shortness of breath, fever, and pneumonia (hypersensitivity pneumonitis), tongue inflammation, oral mucositis, liver failure, blisters on the mucous membranes of the mouth and genitals (Stevens-Johnson syndrome), toxic epidermal necrolysis, hypersensitivity to light, erythema multiforme, lupus-like syndrome, skin pigmentation disorders, purpura, acne, excessive sweating, hair loss, hirsutism, bone metabolism disorders leading to demineralization of bones/osteoporosis, joint pain, muscle pain, interstitial nephritis, kidney failure, kidney function disorders (e.g. proteinuria, hematuria, oliguria, and increased blood urea nitrogen/azotemia), frequent urination, sudden decrease in urine output, sexual disorders/erectile dysfunction, spermatogenesis disorders (reduced sperm count or motility), increased thyroid-stimulating hormone (TSH) in the blood.
Frequency not known: frequency cannot be estimated from the available data
sedation, memory loss, purple or reddish-purple spots, which may be itchy ,drug rash with eosinophilia and systemic symptoms, lichenoid keratosis, reactivation of herpesvirus 6 infection (may be severe due to immune system disorders), complete loss of nails, fractures, decreased bone density, bone marrow failure, i.e. the bone marrow produces an insufficient number of red and white blood cells, as well as platelets, colitis, high ammonia levels in the blood (hyperammonemia). Symptoms of hyperammonemia may include irritability, disorientation, vomiting, loss of appetite, and drowsiness.
If the patient experiences any side effects, including those not listed in this leaflet, they should tell their doctor or pharmacist. Side effects can be reported directly to the Department of Drug Safety Monitoring of the Office for Registration of Medicinal Products, Medical Devices, and Biocidal Products,
Jerozolimskie Avenue 181C
02-222 Warsaw
Phone: +48 22 49 21 301
Fax: +48 22 49 21 309
website: https://smz.ezdrowie.gov.pl
Side effects can also be reported to the marketing authorization holder.
Reporting side effects will help to gather more information on the safety of the medicine.
Tegretol is available in an orange glass bottle, closed with a polypropylene or polyethylene cap, in a cardboard box. A 5 mL measuring cup is attached to the packaging. 1 bottle contains 100 mL or 250 mL of Tegretol oral suspension.
Novartis Poland Sp. z o.o.
Marynarska Street 15
02-674 Warsaw
Phone: +48 22 375 48 88
Novartis Farmacéutica SA
Gran Via de les Corts Catalanes, 764
08013 Barcelona
Spain
Novartis Pharma GmbH
Roonstrasse 25
90429 Nürnberg
Germany
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