Oxcarbazepine 600 mg Tablets Under Non-Fasting Conditions

Randomized, Open-Label, 2-Way Crossover, Bioequivalence Study of Oxcarbazepine 600 mg Tablet and Trileptal® Following a 600 mg Dose in Healthy Subjects Under Fed Conditions

The objective of this study is to compare the rate and extent of absorption of a test formulation of oxcarbazepine tablets and Trileptal® tablets administered as a 1 x 600 mg dose under fed conditions.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Drug: Oxcarbazepine; Drug: Trileptal®

Detailed Description

Criteria for Evaluation: FDA Bioequivalence Criteria

Statistical Methods: FDA bioequivalence statistical methods

• Study Type: Interventional
• Enrollment (Actual): 120
• Phase: Phase 1

Contacts and Locations

Study Locations

• Canada
  • Quebec
    • Montreal, Quebec, Canada, H3X 2H9
      • SFBC Anapharm

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria

• Male or female, smoker or non-smoker, 18 years of age and older.
• BMI greater than or equal to 19.0 and less than or equal to 30.0 kg/m2

Exclusion Criteria

Subjects to whom any of the following applies will be excluded from the study:

• Clinically significant illnesses or surgery within 4 weeks of the administration of study medication.
• Any clinically significant abnormality or abnormal laboratory test results found during medical screening.
• Any reason which, in the opinion of the medical subinvestigator, would prevent the subject from participating in the study.
• Positive testing for hepatitis B, hepatitis C or HIV at screening.
• ECG abnormalities (clinically significant) or vital sign abnormalities (systolic blood pressure lower than 90 or over 140 mmHg, or diastolic blood pressure lower than 50 or over 90mmHg; or heart rate less than 50 or over 100 bpm) at screening.
• History of significant alcohol abuse or drug abuse within one year prior to the screening visit.
• Regular use of alcohol within six months prior to the screening visit (more than 14 units of alcohol per [1 Unit = 150 mL of wine or 360 mL of beer or 45 mL of 40% alcohol], or positive alcohol breath test at screening.
• Use of soft drugs (such as marijuana) within 3 months of the screening visit or hard drugs (such as cocaine, phencyclidine (PCP) and crack) within 1 year prior to the screening visit or positive urine drug screen at screening.
• History of allergic reactions to heparin, oxcarbazepine, carbamazepine, or other related drugs.
• Use of any drugs known to induce or inhibit hepatic drug metabolism (examples of inducers: barbiturates, carbamazepine, phenytoin, glucocorticoids, omeprazole; examples of inhibitors: antidepressants (SSRI), cimetidine, diltiazem, macrolides, imidazoles, neuroleptics, verapamil, fluoroquinolones, antihistamines) within 30 days prior to the administration of the study medication.
• Use of an investigational drug or participation on an investigation study within 30 days prior to dosing.
• Clinically significant history or presence of any gastrointestinal pathology (e.g. chronic diarrhea, inflammatory bowel disease), unresolved gastrointestinal symptoms (e.g. diarrhea, vomiting), liver or kidney disease, or other conditions known to interfere with the absorption, distribution, metabolism, or excretion of the drug.
• Any clinically significant history or presence or neurological, endocrinal, cardiovascular, pulmonary, hematologic, immunologic, psychiatric, or metabolic disease.
• Use of prescription medication within 14 days prior to administration of study medication or over-the-counter products (including natural food supplements, vitamins, garlic as a supplement) within 7 days prior to administration of study medication, except for topical products without systemic absorption.
• Difficulty to swallow study medication.
• Smoking more than 25 cigarettes per day.
• Any food allergy, intolerance, restriction or special diet that, in the opinion of the Medical Sub-Investigator, could contraindicate the subject's participation in this study.
• A depot injection or an implant of any drug within 3 months prior to administration of study medication.
• Donation of plasma (500 mL) within 30 days prior to drug administration. Donation or loss of whole blood (excluding the volume of blood that will be drawn during the screening procedures of this study) prior to administration of the study medication as follows:
• 50 mL to 300 mL of whole blood within 30 days or
• 301 mL to 500 mL of whole blood within 45 days or
• more than 500 mL of whole blood within 56 days.
• Consumption of food or beverages containing grapefruit (e.g. fresh, canned or frozen) within 7 days prior to administration of the study medication.
• History or presence of atreoventricular (AV) block.
• Difficulty fasting or consuming the standard meals.
• Intolerance to venipunctures.
• Clinically significant history of renal, hepatic, or cardiovascular, tuberculosis, epilepsy, asthma, diabetes, psychosis, or glaucoma will not be eligible for this study.
• Positive urine pregnancy test at screening.
• Breast-feeding subject.
• Female subjects of child-bearing potential having unprotected sexual intercourse with any non-sterile male partner within 14 days prior to study drug administration. Acceptable methods of contraception:
• Intra-uterine contraceptive device (placed at least 4 weeks prior to study drug administration.
• Condom or diaphragm + spermicide.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Oxcarbazepine; Oxcarbazepine 600 mg Tablet (test) dosed in first period followed by Trileptal® 600 mg Tablet (reference) dosed in second period	Drug: Oxcarbazepine; 600 mg Tablet
Active Comparator: Trileptal®; Trileptal® 600 mg Tablet (reference) dosed in first period followed by Oxcarbazepine 600 mg Tablet (test) dosed in second period	Drug: Trileptal®; 600 mg Tablet

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cmax - Maximum Observed Concentration - Oxcarbazepine in Plasma	Bioequivalence based on Cmax	Blood samples collected over 48 hour period
AUC0-inf - Area Under the Concentration-time Curve From Time Zero to Infinity (Extrapolated) - Oxcarbazepine	Bioequivalence based on AUC0-inf	Blood samples collected over 48 hour period
AUC0-t - Area Under the Concentration-time Curve From Time Zero to Time of Last Non-zero Concentration (Per Participant) - Oxcarbazepine	Bioequivalence based on AUC0-t	Blood samples collected over 48 hour period

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cmax - 10-hydroxy-carbazepine in Plasma	Informational Purposes Only	Blood samples collected over 48 hour period
AUC0-inf - 10-Hydroxy-Carbazepine Metabolite	Informational Purposes Only	Blood samples collected over 48 hour period
AUC0-t - 10-Hydroxy-Carbazepine Metabolite	Informational Purposes Only	Blood samples collected over 48 hour period

Collaborators and Investigators

• Sponsor: Teva Pharmaceuticals USA
• Investigators: Principal Investigator: Richard Larouche, MD, SFBC Anapharm

Study record dates

Study Major Dates

• Study Start: July 1, 2005
• Primary Completion (Actual): July 1, 2005
• Study Completion (Actual): July 1, 2005

Study Registration Dates

• First Submitted: February 20, 2009
• First Submitted That Met QC Criteria: February 20, 2009
• First Posted (Estimated): February 24, 2009

Study Record Updates

• Last Update Posted (Actual): August 19, 2024
• Last Update Submitted That Met QC Criteria: August 15, 2024
• Last Verified: August 1, 2024

More Information

Terms related to this study

• Keywords: Bioequivalence; Healthy Subjects
• Additional Relevant MeSH Terms: Molecular Mechanisms of Pharmacological Action; Membrane Transport Modulators; Anticonvulsants; Voltage-Gated Sodium Channel Blockers; Sodium Channel Blockers; Cytochrome P-450 Enzyme Inducers; Cytochrome P-450 CYP3A Inducers; Oxcarbazepine
• Other Study ID Numbers: 50370