Dosing schedule (How to take this medicine)
- Your dosing schedule prescribed by your doctor is (( to be written by a healthcare professional))
- For epilepsy: In general, for adults, start with 0.2 to 0.4 g (100 to 200 mg of the active ingredient) at a time, twice a day, or 0.4 to 0.8 g (200 to 400 mg) at a time, once a day. The dosage may be gradually increased up to 1.2 g (600 mg) a day according to the symptoms. The maximum daily dose is 2.4 g (1,200 mg). In general, for children, take 0.2 to 1.2 g (100 to 600 mg of the active ingredient) a day, in several divided doses according to the age/symptoms.
For manic state/excitation: In general, for adults, start with 0.2 to 0.4 g (100 to 200 mg of the active ingredient) at a time, twice a day or 0.4 to 0.8 g (200 to 400 mg) at a time, once a day. The dosage may be gradually increased up to 1.2 g (600 mg) a day according to the symptoms. The maximum daily dose is 2.4 g (1,200 mg).
For trigeminal neuralgia: In general, for adults, start with 0.4 to 0.8 g (200 to 400 mg of the active ingredient) a day. The dosage may be increased up to 1.2 g (600 mg) a day in several divided doses. The maximum daily dose is 1.6 g (800 mg). For children, the dosage may be decreased according to the age/symptoms.
In any case, strictly follow the instructions.
- If you miss a dose, take the missed dose as soon as possible. However, if it is almost time for the next dose, skip the missed dose and follow your regular dosing schedule. You should never take two doses at one time.
- If you accidentally take more than your prescribed dose, consult with your doctor or pharmacist.
- Do not stop taking this medicine unless your doctor instructs you to do so. Epileptic attacks may occur consecutively if you suddenly stop taking this medicine while treating epilepsy.
Possible adverse reactions to this medicine
The most commonly reported adverse reactions include drowsiness, dizziness, light headedness, dull/fatigability, ataxia (a state in which muscle movements have gone wrong), lassitude, rash, headache/dull headache, dizziness on standing up, dry mouth (thirst), angioedema (swelling of the face, tongue and throat), itch, photosensitivity, vasculitis, hives, respiratory distress, flush, porphyria (abdominal pain, nausea), anemia, swelling of lymph glands and pancreatitis. If any of these symptoms occur, consult with your doctor or pharmacist.
The symptoms described below are rarely seen as initial symptoms of the adverse reactions indicated in brackets. If any of these symptoms occur, stop taking this medicine and see your doctor immediately.
- sore throat, bleeding tendency, anemic symptoms [aplastic anemia, pancytopenia, leukopenia, agranulocytosis, anaemia, haemolytic anaemia, pure red cell aplasia, thrombocytopenia]
- fever, skin rash/blister, bloodshot eyes and lip or oral erosions [toxic epidermal necrolysis, mucocutaneous ocular syndrome, erythema multiforme, acute generalized exanthematous pustulosis, erythroderma (exfoliative dermatitis)]
- fever, rash, swelling of lymph node [hypersensitivity syndrome]
- loss of appetite, general malaise, yellow discoloration of the skin or white of the eyes [liver dysfunction, jaundice]
- dizziness, syncope, bradycardia [congestive heart failure, atrioventricular block, sinus node dysfunction, bradycardia]
The above symptoms do not describe all the adverse reactions to this medicine. Consult with your doctor or pharmacist if you notice any symptoms of concern other than those listed above.