Skip to content

Norethindrone/Ethinyl Estradiol 0.4 mg/35 Mcg Chewable Tablets Under Non-Fasted Conditions

A Study to Evaluate the Relative Bioavailability of Norethindrone/Ethinyl Estradiol 0.4 mg/0.035 mg Chewable Tablets (Teva Pharmaceuticals, USA) Compared to FEMCON® Fe (Norethindrone/Ethinyl Estradiol) 0.4 mg/0.035 mg Chewable Tablets (Warner Chilcott) in Healthy Female Volunteers Under Non-Fasted Conditions

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01344369
Enrollment
36
Registered
2011-04-29
Start date
2008-08-31
Completion date
2008-09-30
Last updated
2011-05-30

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

Conditions

Healthy

Keywords

Healthy Subjects, Bioequivalence

Brief summary

The purpose of this study was to evaluate the relative bioavailability of a test formulation of norethindrone/ethinyl estradiol 0.4 mg/0.035 mg chewable tablets (Teva Pharmaceuticals, USA) compared to the reference listed product, FEMCON® Fe (norethindrone/ethinyl estradiol and ferrous fumarate) 0.4 mg/0.035 mg Chewable tablets (Warner Chilcott) under fed conditions in healthy, non-tobacco using, adult female subjects.

Interventions

0.4 mg/0.035 mg Chewable Tablets

DRUGFEMCON® Fe

0.4 mg/0.035 mg Chewable Tablets

Sponsors

Teva Pharmaceuticals USA
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Females, 18-45 years of age inclusive with Body Mass Index within 18-30 kg/m2 inclusive, as described in Novum Standard Operating Procedures. Female subjects must either abstain from sexual intercourse or use a reliable non-hormonal method of contraception (e.g. condom with spermicide, diaphragm, non-hormonal IUD) from at least 14 days prior to the first study dosing, throughout the study, and until 14 days after the last dose. * Normal menstrual cycle. * Good health as determined by lack of clinically significant abnormalities in health assessments performed at screening. * Signed and dated informed consent form, which meets all criteria of current FDA regulations.

Exclusion criteria

* Post menopausal or have irregular menstrual cycle. * Pregnant, lactating, or likely to become pregnant during the study. * History of any drug hypersensitivity or intolerance which, in the opinion of the Investigator, would compromise the safety of the subject or the study. * Significant history or current evidence of chronic infectious disease, system disorder, or organ dysfunction. * Presence of gastrointestinal disease or history of malabsorption within the last year. * History of psychiatric disorders occurring within the last two years that required hospitalization or medication. * Presence of a medical condition requiring regular treatment with prescription drugs. * Use of pharmacologic agents known to significantly induce or inhibit drug-metabolizing enzymes within 30 days prior to dosing. * Participation in any clinical trial within 30 days prior to dosing. * Drug or alcohol addiction requiring treatment in the past 12 months. * Donation or significant loss of whole blood (480 mL or more) within 30 days or plasma within 14 days prior to dosing. * Positive test results for HIV, Hepatitis B surface antigen, or Hepatitis C antibody. * Positive test results for drugs of abuse at screening. * Positive serum pregnancy test. * Subjects who have ever had progestational hormone implants. * Subjects who have had progestational hormone depot injections within 12 months proceeding dosing. * Subjects who are using or have used within the 3 months preceding dosing any vaginally administered estrogen or progestin-containing products. * Any personal or strong family history of estrogen- or progestogen-dependent tumors. * History of clinically significant fibrocystic breast disease. * Subjects with a history of thromboembolic disorders, myocardial infarction, or stroke. * Use of norethindrone or ethinyl estrodiol-containing oral contraceptives within 30 days of initial dosing. * Hysterectomy or oophorectomy (unilateral or bilateral) * User of tobacco or nicotine containing products within 30 days of the start of the study.

Design outcomes

Primary

MeasureTime frameDescription
Cmax of NorethindroneBlood samples collected over a 60 hour period.Bioequivalence based on Norethindrone Cmax (maximum observed concentration of drug substance in plasma).
AUC0-t of NorethindroneBlood samples collected over a 60 hour period.Bioequivalence based on Norethindrone AUC0-t (area under the concentration-time curve from time zero to time of last measurable concentration).
AUC0-inf of NorethindroneBlood samples collected over a 60 hour period.Bioequivalence based on Norethindrone AUC0-inf (area under the concentration-time curve from time zero to infinity).
Cmax of Ethinyl EstradiolBlood samples collected over a 60 hour period.Bioequivalence based on Ethinyl Estradiol Cmax (maximum observed concentration of drug substance in plasma).
AUC0-t of Ethinyl EstradiolBlood samples collected over a 60 hour period.Bioequivalence based on Ethinyl Estradiol AUC0-t (area under the concentration-time curve from time zero to time of last measurable concentration).
AUC0-inf of Ethinyl EstradiolBlood samples collected over a 60 hour period.Bioequivalence based on Ethinyl Estradiol AUC0-inf (area under the concentration-time curve from time zero to infinity).

Countries

United States

Participant flow

Participants by arm

ArmCount
Norethindrone/Ethinyl Estradiol (Test) First
0.4 mg/0.035 mg Norethindrone/Ethinyl Estradiol 0.4 mg/0.035 mg Chewable Tablets test product dosed in first period followed by 0.4 mg/0.035 mg FEMCON® Fe Chewable Tablets reference product dosed in the second period.
18
FEMCON® Fe (Reference) First
0.4 mg/0.035 mg FEMCON® Fe Chewable tablets reference product dosed in first period followed by 0.4 mg/0.035 mg Norethindrone/Ethinyl Estradiol Chewable Tablets test product dosed in the second period.
18
Total36

Withdrawals & dropouts

PeriodReasonFG000FG001
Second InterventionEmesis within 2 x Tmax01
Washout of 28 DaysPhysician Decision01
Washout of 28 DaysWithdrawal by Subject10

Baseline characteristics

CharacteristicNorethindrone/Ethinyl Estradiol (Test) FirstFEMCON® Fe (Reference) FirstTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
18 Participants18 Participants36 Participants
Race/Ethnicity, Customized
Black
12 participants14 participants26 participants
Race/Ethnicity, Customized
Caucasian
2 participants1 participants3 participants
Race/Ethnicity, Customized
Hispanic
4 participants3 participants7 participants
Region of Enrollment
United States
18 participants18 participants36 participants
Sex: Female, Male
Female
18 Participants18 Participants36 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
13 / 3610 / 36
serious
Total, serious adverse events
0 / 360 / 36

Outcome results

Primary

AUC0-inf of Ethinyl Estradiol

Bioequivalence based on Ethinyl Estradiol AUC0-inf (area under the concentration-time curve from time zero to infinity).

Time frame: Blood samples collected over a 60 hour period.

Population: All participants that completed the study had their samples analyzed.

ArmMeasureValue (MEAN)Dispersion
Norethindrone/Ethinyl Estradiol (Test)AUC0-inf of Ethinyl Estradiol2072.5423 pg*h/mLStandard Deviation 483.0176
FEMCON® Fe (Reference)AUC0-inf of Ethinyl Estradiol2152.3775 pg*h/mLStandard Deviation 517.5977
90% CI: [92.22, 100.84]
Primary

AUC0-inf of Norethindrone

Bioequivalence based on Norethindrone AUC0-inf (area under the concentration-time curve from time zero to infinity).

Time frame: Blood samples collected over a 60 hour period.

Population: All participants that completed the study had their samples analyzed.

ArmMeasureValue (MEAN)Dispersion
Norethindrone/Ethinyl Estradiol (Test)AUC0-inf of Norethindrone43.9982 ng*h/mLStandard Deviation 19.4559
FEMCON® Fe (Reference)AUC0-inf of Norethindrone43.8819 ng*h/mLStandard Deviation 18.8478
90% CI: [96.43, 105.48]
Primary

AUC0-t of Ethinyl Estradiol

Bioequivalence based on Ethinyl Estradiol AUC0-t (area under the concentration-time curve from time zero to time of last measurable concentration).

Time frame: Blood samples collected over a 60 hour period.

Population: All participants that completed the study had their samples analyzed.

ArmMeasureValue (MEAN)Dispersion
Norethindrone/Ethinyl Estradiol (Test)AUC0-t of Ethinyl Estradiol1916.2311 pg*h/mLStandard Deviation 433.4875
FEMCON® Fe (Reference)AUC0-t of Ethinyl Estradiol1987.6311 pg*h/mLStandard Deviation 478.7842
90% CI: [92.76, 100.77]
Primary

AUC0-t of Norethindrone

Bioequivalence based on Norethindrone AUC0-t (area under the concentration-time curve from time zero to time of last measurable concentration).

Time frame: Blood samples collected over a 60 hour period.

Population: All participants that completed the study had their samples analyzed.

ArmMeasureValue (MEAN)Dispersion
Norethindrone/Ethinyl Estradiol (Test)AUC0-t of Norethindrone37.8065 ng*h/mLStandard Deviation 16.1921
FEMCON® Fe (Reference)AUC0-t of Norethindrone37.3991 ng*h/mLStandard Deviation 15.3939
90% CI: [96.66, 104.66]
Primary

Cmax of Ethinyl Estradiol

Bioequivalence based on Ethinyl Estradiol Cmax (maximum observed concentration of drug substance in plasma).

Time frame: Blood samples collected over a 60 hour period.

Population: All participants that completed the study had their samples analyzed.

ArmMeasureValue (MEAN)Dispersion
Norethindrone/Ethinyl Estradiol (Test)Cmax of Ethinyl Estradiol137.6758 pg/mLStandard Deviation 33.6231
FEMCON® Fe (Reference)Cmax of Ethinyl Estradiol137.8485 pg/mLStandard Deviation 37.6177
90% CI: [93.69, 108]
Primary

Cmax of Norethindrone

Bioequivalence based on Norethindrone Cmax (maximum observed concentration of drug substance in plasma).

Time frame: Blood samples collected over a 60 hour period.

Population: All participants that completed the study had their samples analyzed.

ArmMeasureValue (MEAN)Dispersion
Norethindrone/Ethinyl Estradiol (Test)Cmax of Norethindrone4.3306 ng/mLStandard Deviation 1.7393
FEMCON® Fe (Reference)Cmax of Norethindrone4.2282 ng/mLStandard Deviation 1.6696
90% CI: [93.08, 112.75]

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