CClinicalTrials.gg
CompletedNCT00838279Updated Aug 19, 2024Results posted

Lamotrigine 25 mg Chewable Tablets, Fasting

A Phase 1 interventional study of Lamotrigine 25 mg Chewable Tablets and Lamictal® 25 mg Chewable Tablets in Healthy, sponsored by Teva Pharmaceuticals USA. Completed at 1 site in Canada. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-08-19.

Sponsored by Teva Pharmaceuticals USA · Phase 1, Interventional, and Other

Phase
Phase 1
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The objective of this study is to compare the rate and extent of absorption of lamotrigine 25 mg chewable dispersible tablets (test) versus Lamictal® (reference) administered as 2 x 25 mg chewable dispersible tablets under fasting conditions.

Read the detailed description

Criteria for Evaluation: FDA Bioequivalence Criteria

Statistical Methods: FDA bioequivalence statistical methods

02

Conditions studied

  • Healthy

Keywords

  • Bioequivalence
  • Healthy Subjects
03

In context

Lead sponsor

Teva Pharmaceuticals USA is the lead sponsor of 171 studies on the registry; none are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 4 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Subjects will be females and/or males, non-smokers, 18 years of age and older.
  • Female subjects will be post-menopausal or surgically sterilized.
  • Post-menopausal status is defined as absence of menses for the past 12 months or hysterectomy with bilateral oophorectomy at least 6 months ago.
  • Sterile status is defined as hysterectomy, bilateral oophorectomy or tubal ligation at least 6 months ago.

Exclusion criteria

Exclusion Criteria:

  • Clinically significant illnesses within 4 weeks of the administration of the study medication.
  • Clinically significant surgery within 4 weeks prior to the administration of the study medication.
  • Any clinically significant abnormality found during medical screening.
  • Subjects with a history of renal, hepatic or cardiovascular disease, tuberculosis, epilepsy, asthma, diabetes, psychosis or glaucoma will not be eligible for this study.
  • Any reason which, in the opinion of the medical sub-investigator, would prevent the subject from participating in the study.
  • Abnormal laboratory tests judged clinically significant.
  • Positive urine drug screen at screening.
  • 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 90; or heart rate less than 50 bpm) at screening.
  • Subjects with BMI ≥ 30.0.
  • History of significant alcohol abuse within six months of the screening visit or any indication of the regular use of more than two units of alcohol per day (1 Unit - 150 mL of wine or 360 mL of beer or 45 mL of alcohol 40%).
  • History of drug abuse or use of illegal drugs: use of soft drugs (such as marijuana) within 3 months of the screening visit or hard drugs (such as cocaine, phencyclidine (PVP) and crack) within 1 year of the screening visit.
  • Any food allergy, intolerance, restriction or special diet that, in the opinion of the medical sub-investigator, contraindicates the subject's participation in this study.
  • History of allergic reactions to lamotrigine.
  • Use of any drugs known to induce or inhibit drug metabolism (examples of inducers: barbiturates, carbamazepine, phenytoin, glucocorticoids, rifampin/rifabutin; examples of inhibitors: antidepressants, cimetidine, diltiazem, erythromycin, ketoconazole, MAO inhibitors, neuroleptics, verapamil, quinidine, valproic acid), use of an investigational drug or participation in an investigational study within 30 days prior to administration of the study medication.
  • Use of prescription medication within 14 days prior to administration of study medication or over-the-counter products (including natural products, vitamins, garlic as supplement) within 7 days prior to administration of study medication, except for topical products without systemic absorption.
  • Subjects who have had a depot injection or an implant of any drug 3 months prior to administration of study medication.
  • Subjects who have dentures or braces.
  • Donation of plasma (500 mL) within 7 days. Donation or loss of whole blood prior to administration of the study medication as follow: less than 300 mL of whole blood within 30 days; 300 mL to 500 mL of whole blood within 45 days; more than 500 mL of whole blood within 56 days.
  • Positive alcohol breath test at screening.
  • Subjects who have used tobacco in any form within 90 days preceding study drug administration.
  • Female subjects: breast-feeding subjects.
  • Female subjects: positive urine pregnancy test at screening.
05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
32 participants (actual)

Study arms

  • Experimental
    Lamotrigine

    Lamotrigine 2 x 25 mg Chewable Tablet (test) dosed in first period followed by Lamictal® 2 x 25 mg Chewable Tablet (reference) dosed in second period

    Drug: Lamotrigine 25 mg Chewable Tablets

  • Active comparator
    Lamictal®

    Lamictal® 2 x 25 mg Chewable Tablet (reference) dosed in first period followed by Lamotrigine 2 x 25 mg Chewable Tablet (test) dosed in second period

    Drug: Lamictal® 25 mg Chewable Tablets

Interventions

  • DrugLamotrigine 25 mg Chewable Tablets

    2 x 25 mg, single-dose fasting

  • DrugLamictal® 25 mg Chewable Tablets

    2 x 25 mg, single-dose fasting

06

What researchers measure

Primary outcomes

  1. Cmax - Maximum Observed Concentration

    Bioequivalence basd on Cmax

    Time frame: Blood samples collected over 120 hour period

  2. AUC0-inf - Area Under the Concentration-time Curve From Time Zero to Infinity (Extrapolated)

    Bioequivalence based on AUC0-inf

    Time frame: Blood samples collected over 120 hour period

  3. AUC0-t - Area Under the Concentration-time Curve From Time Zero to Time of Last Non-zero Concentration (Per Participant)

    Bioequivalence based on AUC0-t

    Time frame: Blood samples collected over 120 hour period

07

Results

Posted Aug 4, 2009

Participant flow

First Intervention
Participant flow — First Intervention
MilestoneLamotrigine (Test) FirstLamictal® (Reference) First
Started1616
Completed1616
Not completed00
Washout
Participant flow — Washout
MilestoneLamotrigine (Test) FirstLamictal® (Reference) First
Started1616
Completed1515
Not completed11
Withdrew: Protocol violation10
Withdrew: Withdrawal by subject01
Second Intervention
Participant flow — Second Intervention
MilestoneLamotrigine (Test) FirstLamictal® (Reference) First
Started1515
Completed1515
Not completed00

Outcome measures

PrimaryCmax - Maximum Observed Concentration

Bioequivalence basd on Cmax

Time frame:
Blood samples collected over 120 hour period
Reported as:
Mean · ng/mL
Cmax - Maximum Observed Concentration
ng/mLLamotrigineLamictal®
Cmax - Maximum Observed Concentration713.46 ± 95.02709.97 ± 84.37
Statistical analysis
  • Lamotrigine vs Lamictal® · Test/ref ratio of ls means x 100: 100.31 · 90% CI 97.82 to 102.85Bioequivalence is established when 90% Confidence Interval falls within 80-125.
PrimaryAUC0-inf - Area Under the Concentration-time Curve From Time Zero to Infinity (Extrapolated)

Bioequivalence based on AUC0-inf

Time frame:
Blood samples collected over 120 hour period
Reported as:
Mean · ng*h/mL
AUC0-inf - Area Under the Concentration-time Curve From Time Zero to Infinity (Extrapolated)
ng*h/mLLamotrigineLamictal®
AUC0-inf - Area Under the Concentration-time Curve From Time Zero to Infinity (Extrapolated)34541.03 ± 14354.4133498.85 ± 12316.96
Statistical analysis
  • Lamotrigine vs Lamictal® · Test/ref ratio of ls means x 100: 101.78 · 90% CI 99.09 to 104.55Bioequivalence is established when 90% Confidence Interval falls within 80-125.
PrimaryAUC0-t - Area Under the Concentration-time Curve From Time Zero to Time of Last Non-zero Concentration (Per Participant)

Bioequivalence based on AUC0-t

Time frame:
Blood samples collected over 120 hour period
Reported as:
Mean · ng/mL
AUC0-t - Area Under the Concentration-time Curve From Time Zero to Time of Last Non-zero Concentration (Per Participant)
ng/mLLamotrigineLamictal®
AUC0-t - Area Under the Concentration-time Curve From Time Zero to Time of Last Non-zero Concentration (Per Participant)28843.06 ± 6866.1228923.66 ± 7355.31
Statistical analysis
  • Lamotrigine vs Lamictal® · Test/ref ratio of ls means x 100: 99.94 · 90% CI 97.40 to 102.55Bioequivalence is established when 90% Confidence Interval falls within 80-125.

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Lamotrigine (Test) FirstLamictal® (Reference) FirstTotal
<=18 years000
Between 18 and 65 years161632
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)Lamotrigine (Test) FirstLamictal® (Reference) FirstTotal
Female101
Male151631
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Lamotrigine (Test) FirstLamictal® (Reference) FirstTotal
Caucasian131225
Black325
American Hispanic022
Region of Enrollment
Region of Enrollment(participants)Lamotrigine (Test) FirstLamictal® (Reference) FirstTotal
Canada161632
08

Study locations

1 site
  • Anapharm Inc.
    Sainte-Foy, Quebec GIV2K8, Canada
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00838279
Lead sponsor
Teva Pharmaceuticals USA
First posted
Feb 6, 2009
Start date
Feb 2002
Primary completion
Mar 2002
Completion
Mar 2002
Results posted
Aug 4, 2009
Last update
Aug 19, 2024

Study contacts

Eric Bicrell, M.D.
principal investigator · Anapharm

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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