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Comparative assessment of the absorption of a test formulation of 1 x 40 mg isotretinoin capsule against the innovator 2 x 20 mg isotretinoin capsules conducted under fed conditions in healthy male volunteers.

A single dose, randomized, blinded, pharmacokinetic study of a test formulation of 1 x 40 mg isotretinoin capsule in a 2 way crossover comparison against the innovator 2 x 20 mg isotretinoin capsules conducted under fed conditions in healthy male volunteers.

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12615000772549
Enrollment
24
Registered
2015-07-27
Start date
2015-08-11
Completion date
2015-09-01
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 40 mg isotretinoin capsule relative to that of the reference formulation (innovator brand of 2 x 20 mg isotreinoin capsules) following oral administration of a single dose of 40 mg in healthy male subjects under fed conditions.

Interventions

Single dose, crossover study design whereby each participant receives the test formulation of isotretinoin, 1 x 40 mg capsule on one occasion and the innovator formulation of isotretinoin, 2 x 20 mg capsules on one occasion with each dose separated by a two week washout period. The intervention for this trial is the test formulation of isotretinoin. No water is allowed for 1 hour prior to dosing until 1 hour after dosing (except for the water consumed with each dose). Participants are require

Single dose, crossover study design whereby each participant receives the test formulation of isotretinoin, 1 x 40 mg capsule on one occasion and the innovator formulation of isotretinoin, 2 x 20 mg capsules on one occasion with each dose separated by a two week washout period. The intervention for this trial is the test formulation of isotretinoin. No water is allowed for 1 hour prior to dosing until 1 hour after dosing (except for the water consumed with each dose). Participants are required not to eat for 10 hours before receiving a standardised high fat content meal and to fast for approximately 4 hours after each dose. Bathroom visits will be supervised to ensure no unauthorized water or food intake and for personal safety. Participants will be confined at the Clinical Site for 12 hours prior to dosing to ensure compliance and for 24 hours after dosing. Participants will be monitored for adverse events throughout the study. 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 12 hours prior to dosing. Pre and post study laboratory tests will be completed to assess the health of the participants along with HIV, Hepatitis and drugs of abuse testing. Each dose 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 that the medication has been taken as directed.

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
Male
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

Healthy males Aged between 18 and 55 years Non-smoker BMI greater than or equal to 18 and less than 33 inclusive Normal, healthy individuals as determined by medical history, physical examination, ECG, blood pressure and laboratory tests Drug free as determined by urine drug testing Able to comply with the study restrictions Able to provide written informed consent

Exclusion criteria

Females History of recent recurrent attacks of bronchitis, asthma or migraine headaches Concomitant drug therapy of any kind Received an investigational compound or drug known to induce or inhibit liver enzymes within 60 days of the start of the study History of depression or other mental illness, or a history of epilepsy or seizures History of conditions that might interfere with the absorption, distribution, metabolism or excretion of the drug History of alcohol or drug abuse or dependency Sensitivities to Vitamin A or food such as liver Participation in a drug study within 60 days of the start of the study or undertaking to donate blood within 60 days after the completion of the study Sensitivities to isotretinoin, its excipients or any other retinoids Contact lens wearers and individuals who have very fair skin and a strong propensity to sunburn Individuals 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