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Comparative assessment of the absorption of a generic formulation of paracetamol / ibuprofen / doxylamine tablet against the innovator paracetamol / codeine phosphate hemihydrate / doxylamine succinate tablets and paracetamol / ibuprofen tablet conducted under fasting conditions in healthy male and female volunteers

A single dose, blinded, balanced, randomised, three-treatment, three period, six sequence, three-way crossover bioequivalence study comparing an immediate release tablet containing 500 mg paracetamol / 200 mg ibuprofen / 5.1 mg doxylamine with Dolased® immediate release tablets containing 500 mg paracetamol / 10 mg codeine phosphate hemihydrate / 5.1 mg doxylamine succinate and Nuromol® immediate release tablets containing 500 mg paracetamol / 200 mg ibuprofen in healthy male and female subjects under fasting conditions.

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12619001017112
Enrollment
24
Registered
2019-07-16
Start date
2019-07-19
Completion date
2019-08-05
Last updated
2021-07-12

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 by comparing the rate and extent of absorption of the test formulation, a 500 mg paracetamol / 200 mg ibuprofen / 5.1 mg doxylamine succinate immediate release tablet relative to that of the reference formulations, an immediate release tablet containing 500 mg paracetamol / 10 mg codeine phosphate hemihydrate / 5.1 mg doxylamine succinate and an immediate release tablet containing 500 mg paracetamol / 200 mg ibuprofen following oral administration of a single dose to healthy male and female subjects under fasting conditions.

Interventions

Single dose, three-treatment, three-period, six-sequence, crossover, bioequivalence design whereby each participant receives the test formulation of 1 x 500 mg paracetamol, 200 mg ibuprofen and 5.1 mg doxylamine succinate immediate release tablet on one occasion and the innovator formulations of 1 x 500 mg paracetamol, 10 mg codeine phosphate hemihydrate and 5.1 mg doxylamine succinate immediate release tablet on one occasion and 1 x 500 mg paracetamol and 200 mg ibuprofen immediate release tab

Single dose, three-treatment, three-period, six-sequence, crossover, bioequivalence design whereby each participant receives the test formulation of 1 x 500 mg paracetamol, 200 mg ibuprofen and 5.1 mg doxylamine succinate immediate release tablet on one occasion and the innovator formulations of 1 x 500 mg paracetamol, 10 mg codeine phosphate hemihydrate and 5.1 mg doxylamine succinate immediate release tablet on one occasion and 1 x 500 mg paracetamol and 200 mg ibuprofen immediate release tablet on one occasion with each dose seperated by a one week washout period. The intervention for this trial is the test formulation of 500 mg paracetamol, 200 mg ibuprofen and 5.1 mg doxylamine succinate. 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 prior to dosing. Subjects are required 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 and will be monitored for 24 hours. 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 health of participants. 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 the medication has been taken as directed.

Sponsors

Zenith Technology Corporation Limited
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 males and females Aged between 18 and 55 Non-smoker BMI between 18.5 and 32 inclusive Normal, healthy individuals as determined by medical history, physical examination, ECG, blood pressure and laboratory tests Able to provide written informed consent

Exclusion criteria

Any history of recent recurrent attacks of bronchitis, asthma, migraine headaches Concomitant drug therapy of any kind Sensitivity to any of the medicines or ingredients History of any conditions that might interfere with the absorption, distribution, metabolism or excretion of the drug Smoker (anyone who has smoked in the last 6 months) History of alcohol or drug abuse or dependency Participation in a drug study within 60 days of the start of the study or donated blood in the 30 days preceding the study. 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