Bioequivalence Study of Raperazole 20mg DR Tabs and PARIET® 20 mg DR Tabs Under Fed Conditions

Study Overview
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Brief Summary
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This is an open-label, randomized, single dose, two-sequence, two-periods crossover study, separated by 7 days washout interval from the first Study Drug Administration. This study is conducted to determine the bioequivalence of Rabeprazole from IDIAZOLE 20mg Delayed-Release (DR) tablets (tabs) and PARIET 20 mg DR tabs after a single oral dose administration of each to healthy adults fed under conditions. In Period 1, subjects will be randomized to either Idiazole 20mg DR tabs or PARIET 20 mg DR tabs. Following a washout of at least 7 days, subjects will be crossed over in Period 2 to receive the treatment that they did not receive in Period 1. PARIET is a registered trademark of EISAI Co. Limited.

Official Title
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Comparative Randomized, Single Dose, Two-way Crossover Open-label Study to Determine the Bioequivalence of Rabeprazole From Raperazole 20mg DR Tabs (GSK, Egypt) and PARIET 20 mg DR Tabs (JANSSEN, EGYPT) After a Single Oral Dose Administration of Each to Healthy Adults Under Fed Conditions

Conditions
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Gastrointestinal Diseases

Intervention / Treatment
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* Drug: IDIAZOLE 20mg DR tabs
* Drug: PARIET 20 mg DR tabs


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy male or female, age 18 to 55 years, inclusive. Body weight within 10 percent of normal range according to the accepted normal values for body mass index (BMI). Medical demographics without evidence of clinically significant deviation from normal medical condition. Results of clinical laboratory test are within the normal range or with a deviation that is not considered clinically significant by principal investigator. Subject does not have allergy to the drugs under investigation. Exclusion Criteria: Subjects with known allergy to the products tested. Subjects whose values of BMI were outside the accepted normal ranges. Female subjects who were pregnant, nursing or taking birth control pills. Medical demographics with evidence of clinically significant deviation from normal medical condition. Results of laboratory tests which are clinically significant. Acute infection within one week preceding first study drug administration. History of drug or alcohol abuse. Subject does not agree not to take any prescription or non-prescription drugs within two weeks before first study drug administration and until the end of the study. Subject is on a special diet (for example subject is vegetarian). Subject does not agree not to consume any beverages or foods containing methyl-xanthenes e.g. caffeine (coffee, tea, cola, chocolate etc.) 48 hours prior to the study administration of either study period until donating the last sample in each respective period. Subject does not agree not to consume any beverages or foods containing grapefruit 7 days prior to first study drug administration until the end of the study. Subject has a history of severe diseases which have direct impact on the study. Participation in a bioequivalence study or in a clinical study within the last 6 weeks before first study drug administration. Subject intends to be hospitalized within 6 weeks after first study drug administration. Subjects who, through completion of this study, would have donated more than 500 milliliter (mL) of blood in 7 days, or 750 mL of blood in 30 days, 1000 mL in 90 days, 1250 mL in 120 days, 1500 ml in 180 days, 2000 mL in 270 days, 2500 mL of blood in 1 year.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

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


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group A-Idiazole then Pariet<br>Subjects will receive a single oral dose of IDIAZOLE 20mg DR tabs under fed condition in treatment period 1 followed by 7 days washout interval from the first study drug administration. After the washout interval the subjects will receive a single dose of PARIET 20 mg DR tabs under fed condition in treatment period 2. | Drug: IDIAZOLE 20mg DR tabs<br>* IDIAZOLE 20mg DR tabs is a delayed-release, enteric-coated tablets containing 20 mg of rabeprazole sodium.<br>Drug: PARIET 20 mg DR tabs<br>* PARIET 20 mg DR tabs is a delayed-release, enteric-coated tablets containing 20 mg rabeprazole sodium.<br>|
| Experimental: Group B-Pariet then Idiazole<br>Subjects will receive a single oral dose of PARIET 20 mg DR tabs under fed condition in treatment period 1 followed by 7 days washout interval from the first study drug administration. After the washout interval the subjects will receive a single dose of Idiazole 20mg DR tabs under fed condition in treatment period 2. | Drug: IDIAZOLE 20mg DR tabs<br>* IDIAZOLE 20mg DR tabs is a delayed-release, enteric-coated tablets containing 20 mg of rabeprazole sodium.<br>Drug: PARIET 20 mg DR tabs<br>* PARIET 20 mg DR tabs is a delayed-release, enteric-coated tablets containing 20 mg rabeprazole sodium.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Maximal Measured Plasma Concentration (Cmax) of Rabeprazole | Blood samples were collected for pharmacokinetic analyses in each period at specified time points. Pharmacokinetic parameters of rabeprazole were estimated using standard non-compartmental methods. The Cmax was computed directly from measured data. | Pre-dose and at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 12, 14 and 24 hours post-dose in period 1 and 2 | 
| Area Under the Plasma Concentration-time Curve From Time Zero to the Last Measurable Concentration (AUC [0-t]) of Rabeprazole | Blood samples were collected for pharmacokinetic analyses in each period at specified time points. Pharmacokinetic parameters of rabeprazole were estimated using standard non-compartmental methods. AUC (0-t) was calculated from measured data points from time of administration to time of last quantifiable concentration (Clast) by the linear trapezoidal rule. | Pre-dose and at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 12, 14 and 24 hours post-dose in period 1 and 2 | 
| Mean Area Under the Plasma Concentration-time Curve From Time Zero to Infinity (AUC [0 to Infinity]) of Rabeprazole | Blood samples were collected for pharmacokinetic analyses in each period at specified time points. Pharmacokinetic parameters of rabeprazole were estimated using standard non-compartmental methods. | Pre-dose and at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 12, 14 and 24 hours post-dose in period 1 and 2 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean Time to the Maximum Plasma Concentration (Tmax) of Rabeprazole | Blood samples were collected for pharmacokinetic analysis in each period at specified time points. Pharmacokinetic parameters of Rabeprazole were estimated using standard non-compartmental methods. Tmax was computed directly from the measured data. | Pre-dose and at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 12, 14 and 24 hours post-dose in period 1 and 2 | 
| Mean Apparent First-order Elimination or Terminal Rate Constant (Ke) of Rabeprazole | Blood samples were collected for pharmacokinetic analysis in each period at specified time points. Pharmacokinetic parameters of Rabeprazole were estimated using standard non-compartmental methods. Ke was derived from a semi-log plot of the plasma concentration versus time curve. The parameter was calculated by linear least-squares regression analysis using the last three (or more) non-zero plasma concentrations. | Pre-dose and at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 12, 14 and 24 hours post-dose in period 1 and 2 | 
| Mean Terminal Half Life (t1/2) of Rabeprazole | Half life is the period of time required for the concentration or amount of drug in the body to be reduced by one-half. Blood samples were collected for pharmacokinetic analysis in each period at specified time points. Pharmacokinetic parameters of Rabeprazole were estimated using standard non-compartmental methods. t1/2 was calculated as: t1/2 = Ln(2) / (-b), where b was obtained as the slope of the linear regression of the Ln-transformed plasma concentrations versus time in the terminal period of the plasma curve. | Pre-dose and at 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 9, 10, 12, 14 and 24 hours post-dose in period 1 and 2 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Bioequivalence, Fed condition, PARIET 20 mg, IDIAZOLE 20mg, Rabeprazole