LEVETIRACETAM AFT

Posology Levetiracetam therapy can be initiated with either intravenous or oral administration. Conversion to or from oral to intravenous administration can be done directly without titration. The total daily dose and frequency of administration should be maintained.

Partial onset seizures The recommended dosing for monotherapy (from 16 years of age) and adjunctive therapy is the same; as outlined below. All indications Adults (≥18 years) and adolescents (12 to 17 years) weighing 50 kg or more Add-on therapy for adults (≥18 years) and adolescents (12 to 17 years) weighing 50 kg or more The initial therapeutic dose is 500 mg twice daily.

This dose can be started on the first day of treatment. However, a lower initial dose of 250 mg twice daily may be given based on physician assessment of seizure reduction versus potential side effects. This can be increased to 500 mg twice daily after two weeks.

Depending upon the clinical response and tolerability, the daily dose can be increased up to 1,500 mg twice daily. Dose changes can be made in 250 mg or 500 mg twice daily increases or decreases every two to four weeks. Adolescents (12 to 17 years) weighing below 50 kg and children from 4 years of age The physician should prescribe the most appropriate pharmaceutical form, presentation and strength according to weight, age and dose.

Refer to Paediatric population section for dosing adjustments based on weight. Duration of treatment There is no experience with administration of intravenous levetiracetam for longer period than 4 days. g. in adults and adolescents weighing more than 50 kg: 500 mg decreases twice daily every two to four weeks; in children and adolescents weighting less than 50 kg: dose decrease should not exceed 10 mg/kg twice daily every two weeks).

Special populations Elderly (65 years and older) Adjustment of the dose is recommended in elderly patients with compromised renal function (see “Renal impairment” below). Renal impairment The daily dose must be individualised according to renal function.

For adult patients, refer to the following table and adjust the dose as indicated. To use this dosing table, an estimate of the patient's creatinine clearance (CLcr) in ml/min is needed. 73 m2) Dose and frequency Normal ≥ 80 500 to 1,500 mg twice daily Mild 50-79 500 to 1,000 mg twice daily Moderate 30-49 250 to 750 mg twice daily Severe < 30 250 to 500 mg twice daily End-stage renal disease patients undergoing dialysis(1) -- 500 to 1,000 mg once daily(2) (1) A 750 mg loading dose is recommended on the first day of treatment with levetiracetam.

Summary of the safety profile The most frequently reported adverse reactions were nasopharyngitis, somnolence, headache, fatigue and dizziness. The adverse reaction profile presented below is based on the analysis of pooled placebo-controlled clinical trials with all indications studied, with a total of 3,416 patients treated with levetiracetam.

These data are supplemented with the use of levetiracetam in corresponding open-label extension studies, as well as post-marketing experience. The safety profile of levetiracetam is generally similar across age groups (adult and paediatric patients) and across the approved epilepsy indications.

Since there was limited exposure for levetiracetam intravenous use and since oral and intravenous formulations are bioequivalent, the safety information of levetiracetam intravenous will rely on levetiracetam oral use. Tabulated list of adverse reactions Adverse reactions reported in clinical studies (adults, adolescents, children and infants > 1 month) and from post-marketing experience are listed in the following table per System Organ Class and per frequency.

Adverse reactions are presented in the order of decreasing seriousness and their frequency is defined as follows: very common (≥1/10); common (≥1/100 to <1/10); uncommon (≥1/1,000 to <1/100); rare (≥1/10,000 to <1/1,000) and very rare (<1/10,000).

Frequency category MedDRA SOC Very Common Common Uncommon Rare Infections and infestations Nasopharyngitis Infection Blood and lymphatic system disorders Thrombocytopenia, leukopenia Pancytopenia, neutropenia, agranulocytosis Immune system disorders Drug reaction with eosinophilia and systemic symptoms (DRESS), Hypersensitivity (including angioedema and anaphylaxis) Metabolism and nutrition disorders Anorexia Weight decreased, weight increase Hyponatraemia Psychiatric disorders Depression, hostility/ aggression, anxiety, insomnia, nervousness/ irritability Suicide attempt, suicidal ideation, psychotic disorder, abnormal behaviour, hallucination, anger, confusional state, panic attack, affect lability/ mood swings, agitation Completed suicide, personality disorder, thinking abnormal, delirium Nervous system disorders Somnolence, headache Convulsion, balance disorder, dizziness, lethargy, tremor Amnesia, memory impairment, coordination abnormal/ataxia, paraesthesia, disturbance in attention Choreoathetosis, dyskinesia, hyperkinesia, gait disturbance, encephalopathy, seizures aggravated Eye disorders Diplopia, vision blurred Ear and labyrinth disorders Vertigo Cardiac disorders Electrocardiogram QT prolonged Frequency category MedDRA SOC Very Common Common Uncommon Rare Respiratory, thoracic and mediastinal disorders Cough Gastrointestinal disorders Abdominal pain, diarrhoea, dyspepsia, vomiting, nausea Pancreatitis Hepatobiliary disorders Liver function test abnormal Hepatic failure, hepatitis Renal and Urinary Disorder Acute kidney injury Skin and subcutaneous tissue disorder Rash Alopecia, eczema, pruritus Toxic epidermal necrolysis, Stevens-Johnson syndrome, erythema multiforme Musculoskeletal and connective tissue disorders Muscular weakness, myalgia Rhabdomyolysis and blood creatine phosphokinase increased* General disorders and administration site conditions Asthenia/ fatigue Injury, poisoning and procedural complications Injury *Prevalence is significantly higher in Japanese patients when compared to non- Japanese patients.

Renal impairment The administration of levetiracetam to patients with renal impairment may require dose adjustment. 2). Acute kidney injury The use of levetiracetam has been very rarely associated with acute kidney injury, with a time to onset ranging from a few days to several months.

Blood cell counts Rare cases of decreased blood cell counts (neutropenia, agranulocytosis, leucopenia, thrombocytopenia and pancytopenia) have been described in association with levetiracetam administration, generally at the beginning of the treatment.

8). Suicide Suicide, suicide attempt, suicidal ideation and behaviour have been reported in patients treated with anti-epileptic agents (including levetiracetam. A meta-analysis of randomized placebo-controlled trials of anti-epileptic medicinal products has shown a small increased risk of suicidal thoughts and behaviour.

The mechanism of this risk is not known. Therefore, patients should be monitored for signs of depression and/or suicidal ideation and behaviours and appropriate treatment should be considered. Patients (and caregivers of patients) should be advised to seek medical advice should signs of depression and/or suicidal ideation or behaviour emerge.

Abnormal and aggressive behaviours Levetiracetam may cause psychotic symptoms and behavioural abnormalities including irritability and aggressiveness. Patients treated with levetiracetam should be monitored for developing psychiatric signs suggesting important mood and/or personality changes.

If such behaviours are noticed, treatment adaptation or gradual discontinuation should be considered. 2. Worsening of seizures As with other types of antiepileptic drugs, levetiracetam may rarely exacerbate seizure frequency or severity.

This paradoxical effect was mostly reported within the first month after levetiracetam initiation or increase of the dose, and was reversible upon drug discontinuation or dose decrease. Patients should be advised to consult their physician immediately in case of aggravation of epilepsy.

1.