CI

At a glance

ClinicalIndex Comparison Record
Phase 1Completed· 27 enrolled
Drug / intervention
Placebo and Oxycodone +2 moredrug
Likely dose
Placebo and Oxycodone 10 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05470465
NCT05470465Phase 1Completed

Clinical Study to Investigate the Effect of Administration of Selective Serotonin Reuptake Inhibitors (SSRIs) and an Opioid on Ventilation

Food and Drug Administration (FDA)·interventional·Posted Jul 22, 2022·Updated May 22, 2025

In Brief

A Phase 1 clinical trial evaluating Placebo and Oxycodone, Paroxetine and Oxycodone, and 1 other intervention for Hypercapnia and Ventilatory Depression. Completed, enrolled 27 participants across 1 site.

Detailed Summary

This study is designed to evaluate the effects of the coadministration of paroxetine or escitalopram with an opioid on ventilation. Ventilation will be assessed using a rebreathing methodology. This study will evaluate chronic and acute dosing of paroxetine and escitalopram combined with an opioid as well as chronic and acute dosing of the two drugs without coadministration of an opioid. This study is a 3-period, randomized, placebo-controlled crossover study conducted with 25 healthy participants. Each participant will receive each of the 3 treatments (placebo/oxycodone, paroxetine/oxycodone, escitalopram/oxycodone) in a randomized order.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

Phase 1CompletedFinished
2023202420252026
First PostedJul 22, 2022
Enrollment StartSep 1, 2022
Primary CompletionSep 17, 2023
TodayJul 2, 2026
Enrollment to primary: 1.0 yearsPosted 3.9 years ago

Interventions

Placebo and Oxycodonedrug

Participants will receive placebo on days 1-21 for this treatment period. Oxycodone 10 mg (2 x 5 mg tablets) will be administered on days 6, 12, and 21 of this treatment period.

Paroxetine and Oxycodonedrug

Participants will receive 40 mg paroxetine (2 x 20 mg tablets) on days 1-6 and 60 mg paroxetine (3 x 20 mg tablets) on days 7-21 for this treatment period. Oxycodone 10 mg (2 x 5 mg tablets) will be administered on days 6, 12, and 21 of this treatment period.

Escitalopram and Oxycodonedrug

Participants will receive 20 mg escitalopram (2 x 10 mg tablets) on days 1-6 and 30 mg escitalopram (3 x 10 mg tablets) on days 7-21 for this treatment period. Oxycodone 10 mg (2 x 5 mg tablets) will be administered on days 6, 12, and 21 of this treatment period.