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A Study to Assess if Epanutin Infatabs 50 mg From Germany Are Similar to Dilantin Infatabs 50 mg From Australia

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01355068
First Posted: May 17, 2011
Last Update Posted: December 14, 2011
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Pfizer
  Purpose
In this study, the bioequivalence of Epanutin Infatabs® 50 mg (sourced from Germany) and Dilantin Infatabs® 50 mg (sourced from Australia) will be assessed. This is intended to be a pivotal bioequivalence study.

Condition Intervention Phase
Healthy Drug: Epanutin Infatabs (Phenytoin) Drug: Dilantin Infatabs (Phenytoin) Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: An Open Label, Randomized, Single Dose, Crossover Pivotal Bioequivalence Study of Epanutin Infatabs 50 mg (Sourced From Germany) Verses Dilantin Infatabs 50 mg (Sourced From Australia) in Healthy Subjects

Resource links provided by NLM:


Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) [ Time Frame: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48, and 72 hours (hrs) post-dose ]
    Area under the plasma concentration time-curve from zero (pre-dose) to the last measured concentration (AUClast).

  • Maximum Observed Plasma Concentration (Cmax) [ Time Frame: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 and 72 hrs post-dose ]

Secondary Outcome Measures:
  • Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUC [0-∞]) [ Time Frame: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 and 72 hrs post-dose ]
    AUC (0-∞) = Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-∞). It is obtained from AUC (0-t) plus AUC (t-∞).

  • Extrapolated Area Under the Curve (AUC Percent [%] Extrap) [ Time Frame: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 and 72 hrs post-dose ]
    AUC%extrap is the percentage of AUC [0-∞] obtained by forward extrapolation. It is calculated as (AUC [0-∞] minus AUClast)*100/ AUC [0-∞], where AUC [0-∞] = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-∞) and AUClast is area under the plasma concentration time-curve from zero (pre-dose) to the last measured concentration.

  • Plasma Decay Half Life (t1/2) [ Time Frame: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 and 72 hrs post-dose ]
    Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.

  • Time to Reach Maximum Observed Plasma Concentration (Tmax) [ Time Frame: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 and 72 hrs post-dose ]

Enrollment: 26
Study Start Date: May 2011
Study Completion Date: June 2011
Primary Completion Date: June 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Treatment A
Epanutin Infatabs 50 mg (sourced from Germany), 1 x 50 mg (REFERENCE)
Drug: Epanutin Infatabs (Phenytoin)
Chewable Tablet, 50 mg, Single dose
Experimental: Treatment B
Dilantin Infatabs 50 mg (sourced from Australia), 1 x 50 mg (TEST)
Drug: Dilantin Infatabs (Phenytoin)
Chewable Tablet, 50 mg, Single dose

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   21 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Healthy male and/or female subjects between the ages of 21 and 55 years, inclusive.
  • An informed consent document signed and dated by the subject.

Exclusion Criteria:

  • Evidence or history of clinically significant abnormalities.
  • Any condition possibly affecting drug absorption (e.g. gastrectomy).
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01355068


Locations
Singapore
Pfizer Investigational Site
Singapore, Singapore, 188770
Sponsors and Collaborators
Pfizer
Investigators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Pfizer
ClinicalTrials.gov Identifier: NCT01355068     History of Changes
Other Study ID Numbers: A4121010
First Submitted: May 12, 2011
First Posted: May 17, 2011
Results First Submitted: November 10, 2011
Results First Posted: December 14, 2011
Last Update Posted: December 14, 2011
Last Verified: November 2011

Keywords provided by Pfizer:
phenytoin
chewable tablets
dilantin
epanutin
infatabs
bioequivalence
Partial seizure
Tonic-clonic seizure

Additional relevant MeSH terms:
Phenytoin
Anticonvulsants
Voltage-Gated Sodium Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Cytochrome P-450 CYP1A2 Inducers
Cytochrome P-450 Enzyme Inducers