Therapeutic EquivalencyPhase 1NCT00685165
Fasted Bioequivalence Study of Primidone Tablets and Mysoline Tablets
A Phase 1 study testing Primidone 50 mg Tablet and Primidone (Mysoline®) 50 mg Tablet in people with Therapeutic Equivalency, run by Mutual Pharmaceutical Company, Inc..
Trial summary
The purpose of this study is to compare the bioequivalence of a test formulation of primidone tablets to an equivalent oral dose of the commercially available Mysoline®(primidone tablets) in adult subjects under fasting conditions. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Therapeutic Equivalency
- What is being tested?
- Primidone 50 mg Tablet and Primidone (Mysoline®) 50 mg Tablet
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 22 participants
- Where
- No sites listed yet
- Study dates
- May 2004to Jun 2004
- Phase
- Phase 1
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- male or female
- at least 18 years of age
- weight must be 15% of ideal weight for height and frame
- subjects must be in good health and physical condition as determined by medical history
- subjects must read and sign consent form
Who cannot join
- history of treatment for alcoholism, substance abuse, or drug abuse within the last 24 months
- history of malignancy, stroke, diabetes, cardiac, renal or liver disease
- history of gastroesophageal reflux disease (GERD), malabsorption syndrome, colon cancer, chronic colitis, including Crohn's disease
- history of porphyria, hyperkinesia, respiratory diseases (eg. asthma, emphysema, difficulty breathing, pulmonary obstruction)
- females who pregnant or lactating
- history of hypersensitivity to primidone, barbiturates, and anticonvulsants
Show all 11Show fewer
- sitting systolic blood pressure below 90mm Hg, or diastolic pressure below 50mm Hg (conditions upon screening which might contraindicate or require that caution be used in the administration of primidone)
- heart rate less than 50 beats per minute after a 5 minute rest
- treatment with any other investigational drug during the four weeks prior to initial dosing
- subjects who have donated blood within four weeks prior to the initial dosing
- subjects who smoke or use tobacco products or nicotine products. Three months abstinence is required.
About this study
Official title: A Randomized, Two-Way, Single-Dose, Open-Label Study to Evaluate the Bioequivalence of a Test Tablet Formulation of Primidone 50 mg, Compared to an Equivalent Dose of Primidone (Mysoline®) in Healthy Adult Subjects
The purpose of this study is to compare the bioequivalence of a test formulation of primidone tablets to an equivalent oral dose of the commercially available Mysoline®(primidone tablets) in adult subjects under fasting conditions.
Read the detailed description
The purpose of this study is to compare the bioequivalence of a test formulation of primidone tablets to an equivalent oral dose of the commercially available Mysoline® (primidone tablets) in adult subjects under fasting conditions.
Twenty-two healthy, non-smoking, non-obese male and female volunteers at least 18 years of age will be randomly assigned in a crossover fashion to receive each of two primidone dosing regimens in sequence with a 14 day washout period between dosing periods. On the morning of Day 1, after an overnight fast of at least 10 hours, subjects will receive either a single oral dose of the test formulation, primidone (1 x 50 mg tablet) or a single oral dose of the reference formulation, Mysoline® (1 x 50 mg tablet). After a 14 day washout period, on the morning of Day 15 after an overnight fast, subjects will receive the alternate regimen. Blood samples will be drawn from all participants before dosing and for 72 hours post dose at times sufficient to adequately define the pharmacokinetics of primidone. A further goal of this study is to evaluate the safety and tolerability of this regimen in healthy volunteers. Subjects will be monitored throughout the confinement portion of the study for adverse reactions to the study drugs and/or procedures. Blood pressure and heart rate will be obtained prior to dosing and at 3, 4, 6, 24 and 72 hours post-dose. All adverse events whether elicited by query, spontaneously reported or observed by clinic staff will be evaluated by the investigator and reported in the subject's case report form.
- Conditions
- Therapeutic Equivalency
- Being tested
- Primidone 50 mg Tablet, Primidone (Mysoline®) 50 mg Tablet
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Primidone 50 mg TabletDrug
50 mg tablet administered after an overnight fast of at least 10 hours.
Primidone (Mysoline®) 50 mg TabletDrug
Also called Mysoline®
50 mg tablet administered after an overnight fast of at least 10 hours.
| Study group | Role | What they receive |
|---|---|---|
| Primidone 50 mg Tablets | Experimental | A single dose of primidone 50 mg administered after an overnight fast of at least 10 hours. Receives: Drug: Primidone 50 mg Tablet |
| Primidone (Mysoline®) 50 mg Tablets | Experimental | A single dose of Mysoline® 50 mg administered after an overnight fast of at least 10 hours. Receives: Drug: Primidone (Mysoline®) 50 mg Tablet |
What is being measured
The primary outcome is the main question the study is designed to answer.
Maximum Plasma Concentration (Cmax)
The maximum or peak concentration that the drug reaches in the plasma.
Measured: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.
Area Under the Concentration Versus Time Curve From Time 0 to Time t [AUC(0-t)]
The area under the plasma concentration versus time curve, from time 0 to the time of the last measurable concentration (t), as calculated by the linear trapezoidal rule.
Measured: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.
Area Under the Concentration Versus Time Curve From Time 0 Extrapolated to Infinity [AUC(0-∞)]
The area under the plasma concentration versus time curve from time 0 to infinity. AUC(0-∞) was calculated as the sum of AUC(0-t) plus the ratio of the last measurable plasma concentration to the elimination rate constant.
Measured: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 May 2008 (estimated)
- Study startMay 2004
- Primary completionJun 2004
- Study completionJun 2004
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Therapeutic EquivalencyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- Mutual Pharmaceutical Company, Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00685165
- Sponsor's protocol ID
- 04090
- Status last verified
- Nov 2009
- First submitted
- 24 May 2008
- Last updated
- 20 Jan 2010
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 Jan 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Randomized, Two-Way, Single-Dose, Open-Label Study to Evaluate the Bioequivalence of a Test Tablet Formulation of Primidone 50 mg, Compared to an Equivalent Dose of Primidone (Mysoline®) in Healthy Adult Subjects
- ClinicalTrials.gov ID
- NCT00685165
- Acronym / sponsor ID
- 04090
- Conditions
- Therapeutic Equivalency
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- Mutual Pharmaceutical Company, Inc.Industry (pharma, biotech, devices)
- Study start
- May 2004
- Primary completion
- Jun 2004 (actual)
- Study completion
- Jun 2004 (actual)
- First posted
- 28 May 2008 (estimated)
- Results
- Posted 20 Jan 2010
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to compare the bioequivalence of a test formulation of primidone tablets to an equivalent oral dose of the commercially available Mysoline®(primidone tablets) in adult subjects under fasting conditions.
Detailed description
The purpose of this study is to compare the bioequivalence of a test formulation of primidone tablets to an equivalent oral dose of the commercially available Mysoline® (primidone tablets) in adult subjects under fasting conditions.
Twenty-two healthy, non-smoking, non-obese male and female volunteers at least 18 years of age will be randomly assigned in a crossover fashion to receive each of two primidone dosing regimens in sequence with a 14 day washout period between dosing periods. On the morning of Day 1, after an overnight fast of at least 10 hours, subjects will receive either a single oral dose of the test formulation, primidone (1 x 50 mg tablet) or a single oral dose of the reference formulation, Mysoline® (1 x 50 mg tablet). After a 14 day washout period, on the morning of Day 15 after an overnight fast, subjects will receive the alternate regimen. Blood samples will be drawn from all participants before dosing and for 72 hours post dose at times sufficient to adequately define the pharmacokinetics of primidone. A further goal of this study is to evaluate the safety and tolerability of this regimen in healthy volunteers. Subjects will be monitored throughout the confinement portion of the study for adverse reactions to the study drugs and/or procedures. Blood pressure and heart rate will be obtained prior to dosing and at 3, 4, 6, 24 and 72 hours post-dose. All adverse events whether elicited by query, spontaneously reported or observed by clinic staff will be evaluated by the investigator and reported in the subject's case report form.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Primidone 50 mg Tablets | Experimental | Drug: Primidone 50 mg TabletA single dose of primidone 50 mg administered after an overnight fast of at least 10 hours. |
| Primidone (Mysoline®) 50 mg Tablets | Experimental | Drug: Primidone (Mysoline®) 50 mg TabletA single dose of Mysoline® 50 mg administered after an overnight fast of at least 10 hours. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- male or female
- at least 18 years of age
- weight must be 15% of ideal weight for height and frame
- subjects must be in good health and physical condition as determined by medical history
- subjects must read and sign consent form
Key exclusion criteria (11 listed)
- history of treatment for alcoholism, substance abuse, or drug abuse within the last 24 months
- history of malignancy, stroke, diabetes, cardiac, renal or liver disease
- history of gastroesophageal reflux disease (GERD), malabsorption syndrome, colon cancer, chronic colitis, including Crohn's disease
- history of porphyria, hyperkinesia, respiratory diseases (eg. asthma, emphysema, difficulty breathing, pulmonary obstruction)
- females who pregnant or lactating
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Primidone 50 mg Tablet50 mg tablet administered after an overnight fast of at least 10 hours. | Drug | Primidone 50 mg Tablets |
| Primidone (Mysoline®) 50 mg TabletAlso: Mysoline®50 mg tablet administered after an overnight fast of at least 10 hours. | Drug | Primidone (Mysoline®) 50 mg Tablets |
Primary outcome
Maximum Plasma Concentration (Cmax)
Time frame: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.
The maximum or peak concentration that the drug reaches in the plasma.
Area Under the Concentration Versus Time Curve From Time 0 to Time t [AUC(0-t)]
Time frame: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.
The area under the plasma concentration versus time curve, from time 0 to the time of the last measurable concentration (t), as calculated by the linear trapezoidal rule.
Area Under the Concentration Versus Time Curve From Time 0 Extrapolated to Infinity [AUC(0-∞)]
Time frame: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.
The area under the plasma concentration versus time curve from time 0 to infinity. AUC(0-∞) was calculated as the sum of AUC(0-t) plus the ratio of the last measurable plasma concentration to the elimination rate constant.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Jan 2010.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Recalls, Market Withdrawals and Safety AlertsLink provided by the sponsor.
- Daily Med - Posting of Recently Submitted Labeling to the FDALink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Primidone 50 mg Tablet and Primidone (Mysoline®) 50 mg Tablet in people with Therapeutic Equivalency, run by Mutual Pharmaceutical Company, Inc..
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 20 Jan 2010. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 20 Jan 2010). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Maximum Plasma Concentration (Cmax) (time frame: serial pharmacokinetic plasma concentrations were drawn prior to dose administration (0 hour) and at 0.33, 0.67, 1, 1.33, 1.67, 2, 2.33, 2.67, 3, 3.5, 4, 4.5, 5, 6, 8, 12, 18, 24, 36, 48, 60 and 72 hours after drug administration.). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Jan 2010.