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A Conversion Study of Immediate Release (IR) and Modified Release (MR) Forms of Topiramate (TPM)

A Conversion Study to Determine the Relative Bioavailability of TPM MR vs TPM IR in Subjects With Epilepsy

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01114854
Enrollment
69
Registered
2010-05-03
Start date
2010-06-30
Completion date
2011-01-31
Last updated
2017-05-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Epilepsy

Brief summary

This multi-center, two-treatment study compares the pharmacokinetic profiles of Immediate Release (IR) and Modified Release (MR) formulations of Topiramate (TPM) in patients with epilepsy.

Interventions

DRUGTopiramate IR
DRUGTopiramate ER

Sponsors

Supernus Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Masking description

It was a open-label study

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Adult male or female patients with epilepsy on stable doses of topiramate. 2. Able to voluntarily provide written informed consent to participate in the study. 3. Use of an effective form of birth control if of child-bearing potential.

Exclusion criteria

1. Diagnosis of status epilepticus, non-epileptic seizures, or any progressive CNS disease. 2. Recent or recurrent suicidal thoughts or ideation. 3. Clinically significant medical condition that may affect the safety of the subject. 4. Females who are pregnant or lactating.

Design outcomes

Primary

MeasureTime frame
relative bioavailability at steady-state of TPM MR and TPM IR, as determined by TPM levels in plasma2 weeks

Secondary

MeasureTime frame
relative bioavailability of TPM MR immediately following switch from TPM IR, as determined by TPM levels in plasma2 weeks

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026