Single Dose Crossover Comparative Bioavailability Study of Eslicarbazepine Acetate Versus To-be-marketed Formulation

Single center, randomized, single dose, laboratory-blinded, 2-period, 2-sequence, crossover design to evaluate and compare the relative bioavailability and therefore the bioequivalence of three doses (400 mg, 600 mg and 800 mg) of eslicarbazepine acetate for two formulations (CTF versus TBM) after a single oral dose administration under fasting conditions

Inclusion criteria

• Availability of volunteer for the entire study period and willingness to adhere to protocol requirements as evidenced by the informed consent form (ICF) duly read, signed and dated by the volunteer
• Male or female aged of at least 18 years but not older than 55 years with a body mass index (BMI) greater than or equal to equal to 19 and below 30 kg/m2
• Clinical laboratory values within the laboratory's stated normal range; if not within this range, they must be without any clinical significance (laboratory tests are presented in section 6.1.1.3)
• Healthy according to the medical history, laboratory results and physical examination
• Light-, non- or ex-smokers. A light smoker is defined as someone smoking 10 cigarettes or less per day for at least 3 months before day 1 of this study. An exsmoker is defined as someone who completely stopped smoking for at least 12 months before day 1 of this study

Exclusion criteria

• Significant history of hypersensitivity to eslicarbazepine, oxcarbazepine, carbamazepine or any related products (including excipients of the formulations) as well as severe hypersensitivity reactions (like angioedema) to any drugs
• Presence of significant gastrointestinal, liver or kidney disease, or any other conditions known to interfere with the absorption, distribution, metabolism or excretion of drugs or known to potentiate or predispose to undesired effects
• History of significant gastrointestinal, liver or kidney disease, or surgery that may affect drug bioavailability, including but not limited to cholecystectomy
• Presence of significant cardiovascular, pulmonary, hematologic, neurologic, psychiatric, endocrine, immunologic or dermatologic disease
• Presence of significant heart disease or disorder according to ECG
• Presence or history of significant central nervous system disorder like convulsion or depression
• Participation in any previous study with eslicarbazepine acetate
• Females who are pregnant according to a positive serum pregnancy test or are lactating
• Females of childbearing potential who refuse to use an acceptable contraceptive regimen throughout the study
• Use of systemic contraceptives (oral, implant, etc.) in the previous 14 days before day 1 of this study and until study completion.
• Use of systemic contraceptives (injections) and hormonal replacement therapy in the previous 13 weeks before day 1 of this study and until study completion
• Maintenance therapy with any drug, or significant history of drug dependency or alcohol abuse (> 3 units of alcohol per day, intake of excessive alcohol, acute or chronic)
• Any clinically significant illness in the previous 28 days before day 1 of this study
• Use of any enzyme-modifying drugs, including strong inhibitors of cytochrome P450 (CYP) enzymes (such as cimetidine, fluoxetine, quinidine, erythromycin, ciprofloxacin, fluconazole, ketoconazole, diltiazem and HIV antivirals) and strong inducers of CYP enzymes (such as barbiturates, carbamazepine, glucocorticoids, phenytoin and rifampin), in the previous 28 days before Day 1 of this study
• Participation in another clinical trial or donation of 50 mL or more of blood in the previous 28 days before day 1 of this study
• Donation of 500 mL or more of blood (Canadian Blood Services, Hema-Quebec, clinical studies, etc.) in the previous 56 days before day 1 of this study
• Positive urine screening of drugs of abuse (drugs listing is presented in section 6.1.1.4)
• Any history of tuberculosis and/or prophylaxis for tuberculosis
• Positive results to HIV, HBsAg or anti-HCV tests