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Comparative assessment of the absorption of a generic formulation of levonorgestrel tablet against the innovator levonorgestrel tablet conducted under fasting conditions in healthy female volunteers

A single dose, randomized, blinded, bioequivalence study of levonorgestrel tablets in a 2 way crossover comparison against the innovator levonorgestrel tablet conducted under fasting conditions in healthy female volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12613001123730
Enrollment
24
Registered
2013-10-09
Start date
2013-10-30
Completion date
2014-01-15
Last updated
2020-01-13

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

Conditions

None listed

Brief summary

The objective of this study is to evaluate the bioequivalence of the test (new) formulation of 1.5 mg levonorgestrel tablet relative to that of the reference formulation (innovator brand of 1.5 mg levonorgestrel tablet) following oral administration of a single dose of 1.5 mg in healthy female subjects under fasting conditions.

Interventions

Single dose, crossover over study design whereby each participant receives the test formulation of levonorgestrel (1 x 1.5 mg) on one occasion and the innovator formulation of levonorgestrel(1 x 1.5 mg) on one occasion with each dose seperated by a two week washout period. The intervention for this trial is the test formulation of levonorgestrel. Each dose (1 x 1.5 mg) will be taken orally with 240 ml of water at ambient temperature. Medication must be swallowed whole and a mouth check will be

Single dose, crossover over study design whereby each participant receives the test formulation of levonorgestrel (1 x 1.5 mg) on one occasion and the innovator formulation of levonorgestrel(1 x 1.5 mg) on one occasion with each dose seperated by a two week washout period. The intervention for this trial is the test formulation of levonorgestrel. Each dose (1 x 1.5 mg) will be taken orally with 240 ml of water at ambient temperature. Medication must be swallowed whole and a mouth check will be conducted to ensure the medication has been taken as directed. No water is allowed for 1 hour prior to dosing until 1 hour after dosing (except for the water consumed with the dose). Participants are required not to eat for 10 hours before receiving each dose and to fast for approximately 4 hours after receiving each dose. Bathroom visits will be supervised to ensure no unauthorised water or food intake and for personal safety. Participants will be confined at the Clinical Site for 10 hours prior to dosing to ensure compliance can be monitored and for 24 hours after dosing. Standard meals will be consumed at the Clinical Site with no additional food intake allowed. Alcohol breath testing will be performed upon each participant reporting to the Clinical Site 10 hours prior to dosing. Pre and post study laboratory tests will be completed to assess the healthy of participants along with HIV, Hepatitis and drugs of abuse testing.

Sponsors

Zenith Technology Corp Ltd
Lead SponsorCommercial sector/Industry

Study design

Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

Healthy non-pregnant females Aged between 18 and 55 Non-smoker BMI between 19 and 30 Normal, healthy individuals as determined by medical history, physical examination, ECG, bood pressure and laboratory tests Not currently using any prescribed hormonal contraceptives Able to provide written informed consent

Exclusion criteria

Males Any history of recent recurrent attacks of bronchitis, asthma, migraine headaches Concomitant drug therapy of any kind History of any conditions that might interfere with the absorption, distribution, metabolism or excretion of the drug History of alcohol or drug abuse or dependency Smoker (anyone who has smoked in the last 6 months) Participation in a drug study within 60 days of the start of the study or donated blood in the 60 days preceding the study. Who are pregnant, breastfeeding or who have any obstetric or gynaecological condition Who have ever had an ectopic pregnancy or have a history or family history of thrombophilia or breast cancer Sensitivity to levonorgestrel, any contraceptive agents, excipients of levonorgestrel Volunteers for whom the Clinical Investigator believes, for any reason, that participation would not be an acceptable risk.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026