A Study on Oral and Intranasal Forms of Oxycodone in Healthy Volunteers Using Pharmacokinetic Modeling

May 5, 2026 updated by: Parc de Salut Mar

Physiologically Based Pharmacokinetic Modelling of Oral and Intranasal Formulations of Oxycodone in Healthy Volunteers

This is a single-dose, 2-period, 2-sequence, fasting, open label, crossover randomized design, comparing the pharmacokinetics (PK) and pharmacodynamics (PD) of intranasal and oral oxycodone solutions. The aim will be to characterize the PK and PD of two formulations of oxycodone (intranasal and oral) in healthy subjects, which will be used to verify/validate nasal-CNS-PBPK (Physiologically Based Pharmacokinetic) model predictions following intranasal dosing. A total of 8 healthy male/female subjects will be randomly assigned to one of two sequences in the crossover study. All subjects will receive the same dosage of oxycodone intranasal or oral and the sequence will be determined following randomization.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
8

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • Barcelona, Spain
        • Hospital del Mar Research Institute

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Healthy male or female volunteers according to physical examination, vital signs (blood pressure, heart rate and body temperature), ECG and safety laboratory parameters and results should be within normal ranges or considered as non-clinically relevant by the investigator.
  • Age ≥ 18 and ≤ 55 years.
  • Body weight up to 90 kg
  • Body mass index (BMI) ≥ 18 and ≤ 30 kg/m2.
  • Able/willing to be compliant with the study restrictions
  • Able to read Spanish and adhere to study requirements.
  • Signed informed consent prior to any study-mandated procedure.
  • Prior therapeutic or recreational experience with opioids (i.e., tramadol, oxycodone, or buprenorphine)

Exclusion Criteria:

  • Life-time (current and/or history of) substance use disorders (SUD) according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).
  • Use of any illegal drug within 30 days of screening and throughout participation in the study
  • History of smoking or use of nicotine containing products within 3 months of screening and throughout participation in the study
  • No acute, chronic, or allergic rhinitis
  • Ongoing gastrointestinal diseases or history of gastrointestinal surgery affecting absorption.
  • History of severe bronchial asthma or chronic obstructive pulmonary disease,
  • Any anatomical abnormality or pathological condition of the nasal cavity based on medical history.
  • History of hypothyroidism.
  • Subjects with a clinically relevant disease or condition that in the judgment of the investigator might interfere with the safety or subject's ability to comply with study procedures or requirements and/or bias the interpretation of the study results and/or jeopardize the subject's safety.
  • Current mental diseases that require prescription drugs.
  • Any ophthalmologic condition that could interfere with pupillometry
  • Being under any administrative or legal supervision.
  • Pregnancy and breastfeeding
  • Positive blood or urine test for drugs of abuse or alcohol breath test prior to study drug administration.
  • Current and/or history of anxiety or depression not completely recovered within 12 months prior to study drug administration, as assessed by the Dual Diagnosis Screening Interview (DDSI).
  • CYP2D6 poor or ultrarapid metabolizers.
  • Any clinically relevant findings in physical examination, vital signs, 12-lead ECG and safety laboratory parameters.
  • Positive hepatitis or HIV tests (Ag VHB, IgG VHC, Ac VIH).
  • Known hypersensitivity to any drug or drug excipients.
  • Use of drugs known to induce or inhibit hepatic drug metabolism (check drugs in Appendix 6) within one month prior to study administration or during the study and use of citrus juice during the study.
  • Use of sedative medicines such as benzodiazepines or related drugs in the last 3 months.
  • Any prescription or over-the-counter (OTC) product, not including oral contraceptives but including analgesics (paracetamol), aspirin, herbal, homeopathic, vitamins, minerals and nutritional supplements within one week prior to study drug administration.
  • Intake of foods or beverages containing xanthine (more than 5 cups of coffee, tea or 5 bottles/cans cola drinks) per day.
  • Donation of blood or plasma within two months prior to study drug administration
  • Transfusion of blood or plasma for medical/surgical reasons in the past 120 days.
  • Current or history of inadequate venous access and/or experience of difficulty donating blood.
  • Subject included in a clinical trial within 3 months prior to study drug administration.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Oral oxycodone
Drug: oxycodone
oral solution 0.1 mg/kg
Experimental: intranasal oxycodone
Drug: Oxycodone IN
0.1 mg/kg intravenously oxycodone solution administered intranasally

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
AUC(0-24h)
Time Frame: up to 24 hours
Area under the curve from 0 time to the last measurable concentration (of intranasal and oral oxycodone), calculated from individual plasma PK concentrations.
up to 24 hours
Tmax
Time Frame: Blood samples were taken pre-dose and up to 24 hours after start of each Dose
Time of maximum observed concentration (of intranasal and oral oxycodone), calculated from individual plasma PK concentrations.
Blood samples were taken pre-dose and up to 24 hours after start of each Dose
Cmax
Time Frame: Blood samples were taken pre-dose and up to 24 hours after start of each Dose
The mean maximum observed concentration (of intranasal and oral oxycodone), calculated from individual plasma PK concentrations
Blood samples were taken pre-dose and up to 24 hours after start of each Dose

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Adverse Effects (AE)
Time Frame: Up to 24 hours
AE was performed including number and percentage.
Up to 24 hours

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Pupil Diameter
Time Frame: up to 24 hours
To assess the effects of oxycodone on pupil size; only results at 24 hours will be reported.
up to 24 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Parc de Salut Mar

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Food and Drug Administration (FDA)
University of Manchester

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Rafael De la Torre, PhD, Hospital del Mar Research Institute Barcelona

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 12, 2025

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 7, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 7, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 9, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 30, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 31, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 6, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 5, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2024-515461-34-00 (Ctis)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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