10 )] • Most common adverse reactions in adult patients receiving eslicarbazepine acetate (≥4% and ≥2% greater than placebo): dizziness, somnolence, nausea, headache, diplopia, vomiting, fatigue, vertigo, ataxia, blurred vision, and tremor.
1 ) • Adverse reactions in pediatric patients are similar to those seen in adult patients. To report SUSPECTED ADVERSE REACTIONS, contact Dr. gov/medwatch. 1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
1 ) ], 365 patients received eslicarbazepine acetate, of whom 225 were treated for longer than 12 months and 134 for longer than 24 months. Of the patients in those trials, 95% were between 18 and 65 years old; 48% were male, and 84% were Caucasian.
Across controlled and uncontrolled trials in patients receiving adjunctive therapy for partial-onset seizures, 1,195 patients received eslicarbazepine acetate, of whom 586 were treated for longer than 6 months and 462 for longer than 12 months.
In the placebo controlled adjunctive therapy trials in patients with partial-onset seizures (Study 3, Study 4 and Study 5), 1,021 patients received eslicarbazepine acetate. Of the patients in those trials, approximately 95% were between 18 and 60 years old, approximately 50% were male, and approximately 80% were Caucasian.
Monotherapy Historical Control Trials In the monotherapy epilepsy trials (Study 1 and Study 2), 13% of patients randomized to receive eslicarbazepine acetate at the recommended doses of 1,200 mg and 1,600 mg once daily discontinued from the trials as a result of an adverse event.
The adverse reaction most commonly (≥1% on eslicarbazepine acetate) leading to discontinuation was hyponatremia. Adverse reactions observed in these studies were generally similar to those observed and attributed to drug in adjunctive placebo-controlled studies.
Because these studies did not include a placebo control group, causality could not be established. Dizziness, nausea, somnolence, and fatigue were all reported at lower incidences during the AED Withdrawal Phase and Monotherapy Phase compared with the Titration Phase.
Adjunctive Therapy Controlled Trials In the controlled adjunctive therapy epilepsy trials (Study 3, Study 4, and Study 5), the rate of discontinuation as a result of any adverse reaction was 14% for the 800 mg dose, 25% for the 1,200 mg dose, and 7% in subjects randomized to placebo.
The adverse reactions most commonly (≥1% in any eslicarbazepine acetate treatment group, and greater than placebo) leading to discontinuation, in descending order of frequency, were dizziness, nausea, vomiting, ataxia, diplopia, somnolence, headache, blurred vision, vertigo, asthenia, fatigue, rash, dysarthria, and tremor.
The most frequently reported adverse reactions in patients receiving eslicarbazepine acetate at doses of 800 mg or 1,200 mg (≥4% and ≥2% greater than placebo) were dizziness, somnolence, nausea, headache, diplopia, vomiting, fatigue, vertigo, ataxia, blurred vision, and tremor.
Table 4 gives the incidence of adverse reactions that occurred in ≥2% of subjects with partial-onset seizures in any eslicarbazepine acetate treatment group and for which the incidence was greater than placebo during the controlled clinical trials.
Adverse reactions during titration were less frequent for patients who began therapy at an initial dose of 400 mg for 1 week and then increased to 800 mg compared to patients who initiated therapy at 800 mg.
Table 4:
Adverse Reactions Incidence in Pooled Controlled Clinical Trials of Adjunctive Therapy in Adults (Events ≥2% of Patients in the Eslicarbazepine Acetate Tablets 800 mg or 1,200 mg Dose Group and More Frequent Than in the Placebo Group) Placebo Eslicarbazepine Acetate Tablets 800 mg 1,200 mg (N=426) % (N=415) % (N=410) % Ear and labyrinth disorders Vertigo <1 2 6 Eye disorders Diplopia Blurred vision Visual impairment 2 1 1 9 6 2 11 5 1 Gastrointestinal disorders Nausea Vomiting Diarrhea Constipation Abdominal pain Gastritis 5 3 3 1 1 <1 10 6 4 2 2 2 16 10 2 2 2 <1 General disorders and administration site conditions Fatigue Asthenia Gait disturbance Peripheral edema 4 2 <1 1 4 2 2 2 7 3 2 1 Infections and Infestations Urinary tract infections 1 2 2 Injury, poisoning and procedural complications Fall 1 3 1 Metabolism and nutrition disorders Hyponatremia <1 2 2 Nervous system disorders Dizziness Somnolence Headache Ataxia Balance disorder Tremor Dysarthria Memory impairment Nystagmus 9 8 9 2 <1 1 0 <1 <1 20 11 13 4 3 2 1 1 1 28 18 15 6 3 4 2 2 2 Psychiatric disorders Depression Insomnia 2 1 1 2 3 2 Respiratory, thoracic and mediastinal disorders Cough 1 2 1 Skin and subcutaneous tissue disorders Rash 1 1 3 Vascular disorders Hypertension 1 1 2 Pediatric Patients (4 to 17 Years of Age) Clinical studies of pediatric patients 4 to 17 years of age were conducted which support the safety and tolerability of eslicarbazepine acetate for the treatment of partial-onset seizures.
Across studies in pediatric patients with partial-onset seizures, 393 patients ages 4 to 17 years received eslicarbazepine acetate, of whom 265 received eslicarbazepine acetate for at least 1 year. Adverse reactions reported in clinical studies of pediatric patients 4 to 17 years of age were similar to those seen in adult patients.
Other Adverse Reactions with Eslicarbazepine Acetate Use Compared to placebo, eslicarbazepine acetate use was associated with slightly higher frequencies of decreases in hemoglobin and hematocrit, increases in total cholesterol, triglycerides, and LDL, and increases in creatine phosphokinase.
Adverse Reactions Based on Gender and Race No significant gender differences were noted in the incidence of adverse reactions. Although there were few non-Caucasian patients, no differences in the incidences of adverse reactions compared to Caucasian patients were observed.
2 Postmarketing Experience The following adverse reactions have been identified during postapproval use of eslicarbazepine acetate. 5 )]