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Which opioid disposal method works best? new study aims to find out

NCT ID NCT05991687

Knowledge-focused Sponsor: University of Michigan Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 11, 2026 · Updated 2 times

Summary

This study compares two methods for getting rid of leftover opioid painkillers after surgery: a special pouch that deactivates the drugs, and a prepaid envelope to mail them back. Researchers will track which method more people actually use. The goal is to find a simple, effective way to keep unused opioids out of homes and the environment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
drug disposal pouch and mail-in envelope
What this could lead to
If successful, this could identify the most effective way to dispose of unused opioids, potentially reducing misuse and environmental harm.
What could go wrong
This is a small, early-stage study focused on disposal behavior, not on treating or preventing disease. Results may not apply to all surgical patients or settings.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

200 people

The number who actually took part.

Started

Jul 2023

Finished

Sep 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Anticipated to be prescribed and use an opioid medication to treat acute pain after elective outpatient surgery * Opioid-naive Exclusion Criteria: * Inability to receive email and/or phone calls for follow up assessment

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Analgesics, opioids Surgery

Contacts and locations

Locations

  • University of Michigan

    Ann Arbor, Michigan, 48109, United States

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