Opioid Drug Interaction Study

NCT ID: NCT06757140

Last Updated: 2025-04-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

25 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-01

Study Completion Date

2029-06-01

Brief Summary

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This study will examine the effects of doses of opioid/placebo and doses of alprazolam/placebo, alone and in combination. The primary outcomes are pharmacodynamic measures (subjective ratings of drug liking and other abuse-related effects; physiological outcomes) and pharmacokinetic outcomes (from blood samples) to determine the interaction effects of these compounds.

Detailed Description

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Alprazolam (Xanax®) is a short-acting benzodiazepine that is the commonly prescribed in the U.S. (\>15 million prescriptions in 2021) and CDC reporting indicates that alprazolam was associated with the greatest increase in number of ED presentations of the benzodiazepines. This study will examine the effects of a widely prescribed and abused mu opioid agonist, oxycodone, and a widely prescribed and abused benzodiazepine, alprazolam, when given alone and in combination to experienced drug using volunteers. Key safety outcomes, including expired CO2, pharmacodynamic measures related to abuse potential, and cognitive/psychomotor performance will be thoroughly examined over a range of doses for both drugs alone and in combination. Pharmacokinetic data will also be collected and analyzed to assess the potential pharmacokinetic interaction as an underlying mechanism of action.

Conditions

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Drug Interactions Drug Kinetics

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Investigators
Double-blind

Study Groups

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Placebo / Placebo

Participants will receive 2 drug administrations, neither will be active. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Participants will receive inactive oral doses

Placebo / Oxycodone low oral dose (Percocet, Roxicodone)

Participants will receive 2 drug administrations, one dose oral placebo and one low dose oral oxycodone. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Oxycodone

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Placebo

Intervention Type DRUG

Participants will receive inactive oral doses

Placebo / Oxycodone high oral dose (Percocet, Roxicodone)

Participants will receive 2 drug administrations, one dose oral placebo and one high dose oral oxycodone. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Oxycodone

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Placebo

Intervention Type DRUG

Participants will receive inactive oral doses

Alprazolam low oral dose (Xanax) / Placebo

Participants will receive 2 drug administrations, one dose oral placebo and one low dose oral alprazolam. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Alprazolam

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Placebo

Intervention Type DRUG

Participants will receive inactive oral doses

Alprazolam high oral dose (Xanax) / Placebo

Participants will receive 2 drug administrations, one dose oral placebo and one high dose oral alprazolam. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Alprazolam

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Placebo

Intervention Type DRUG

Participants will receive inactive oral doses

Alprazolam low oral dose (Xanax) / Oxycodone low oral dose (Percocet, Roxicodone)

Participants will receive 2 non-therapeutic oral drug administrations, one low dose alprazolam, and one low dose oxycodone. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Alprazolam

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Oxycodone

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Alprazolam high oral dose (Xanax) / Oxycodone low oral dose (Percocet, Roxicodone)

Participants will receive 2 non-therapeutic oral drug administrations, one high dose alprazolam, and one low dose oxycodone. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Alprazolam

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Oxycodone

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Alprazolam low oral dose (Xanax) / Oxycodone high oral dose (Percocet, Roxicodone)

Participants will receive 2 non-therapeutic oral drug administrations, one low dose alprazolam, and one high dose oxycodone. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Alprazolam

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Oxycodone

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Alprazolam high oral dose (Xanax) / Oxycodone high oral dose (Percocet, Roxicodone)

Participants will receive 2 non-therapeutic oral drug administrations, one high dose alprazolam, and one high dose oxycodone. The experimental sessions are designed to capture the time-action curves for the test drugs (Tmax for both alprazolam and oxycodone ≈ 1.5 hr).

Group Type EXPERIMENTAL

Alprazolam

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Oxycodone

Intervention Type DRUG

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Interventions

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Alprazolam

Participants will receive varying non-therapeutic experimental doses of oral alprazolam, alone and in combination with oral oxycodone

Intervention Type DRUG

Oxycodone

Participants will receive varying non-therapeutic experimental doses of oral oxycodone, alone and in combination with oral alprazolam

Intervention Type DRUG

Placebo

Participants will receive inactive oral doses

Intervention Type DRUG

Other Intervention Names

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Xanax Percocet Roxicodone

Eligibility Criteria

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Inclusion Criteria

* English-speaking and literate participants, able to understand and sign Informed Consent Document
* ages 18 to 55 years old inclusive
* BMI of greater than/equal to 17 and approximately less than or equal to 30
* self-reported opioid use
* self-reported sedative-like drug use
* women of childbearing potential must not be pregnant or breastfeeding at screening and be using an effective form of contraception throughout study participation
* otherwise healthy as determined by the medical/research team based on medical history, physical examination, vital signs, laboratory chemistries (blood chemistry with liver function tests and hematology, urinalysis and microscopic evaluation, 12-lead electrocardiogram)
* willing and able to comply with all testing requirements defined in the protocol
* adequate venous access (determined by RN) for pharmacokinetic blood draws

Exclusion Criteria

* physical dependence on alcohol, opioids, benzodiazepines or sedative/hypnotics requiring medical management/detoxification
* seeking treatment for opioid or any other drug use
* acute medical problem (e.g., infection) or chronic medical problem requiring daily medication or ongoing medical care (e.g., hypertension, cardiovascular disease, diabetes, respiratory disorders \[e.g., asthma, COPD\])
* clinically significant abnormal ECG (as determined by study physician/cardiologist)
* clinically significant abnormal laboratory findings (e.g., liver function tests greater than 3x the upper limits of normal range)
* current or past history of major psychiatric disorder that would limit ability to participate in the study (e.g., bipolar disorder).
* recent use of CYP2C9, CYP2D6 and CYP3A4 inhibitor or inducer that is long-acting and not amenable to a wash-out period after enrollment
* known hypersensitivity to any of the study drugs
* currently pregnant or breastfeeding
* currently under parole or probation with urine testing requirements
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role collaborator

Shanna Babalonis, PhD

OTHER

Sponsor Role lead

Responsible Party

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Shanna Babalonis, PhD

Associate Professor

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Shanna Babalonis, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Kentucky

Locations

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University of Kentucky

Lexington, Kentucky, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Paul A Nuzzo

Role: CONTACT

(859) 323-0002

Facility Contacts

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Paul A Nuzzo

Role: primary

859-323-0002

Other Identifiers

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R01DA016718

Identifier Type: NIH

Identifier Source: secondary_id

View Link

97946

Identifier Type: -

Identifier Source: org_study_id

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