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Smartphone tools aim to cut overdose risk for drug users

NCT ID NCT07649278

Knowledge-focused Sponsor: University of Wisconsin, Madison Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 15, 2026 · Updated 2 times

Summary

This study tests a bundle of smartphone-based tools, including a mobile health app and other online resources, to see if they are practical and helpful for people who use drugs. The goal is to lower overdose risk by improving access to prevention services. Forty participants will use the tools for up to 9 months, and researchers will measure how acceptable, appropriate, and feasible the bundle is.

What this could mean

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

Active substance
Connections mHealth Application (smartphone app bundle)
What this could lead to
If the app bundle is found to be acceptable and feasible, it could offer a new way to support people who use drugs in reducing their overdose risk.
What could go wrong
This is a small, early-stage study with only 40 participants, so results may not apply to everyone. The app bundle may not be effective for all users.

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

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2026

Expected to finish

Jun 2027

An estimate. End dates often move.

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 (Pilot Participant): * Be at least 18 years old * Be able to read and write in English * Report drug use in the past 30 days, defined as * Any use of illicit stimulants, opioids, OR * Use of prescription opioids by a route other than "by mouth/swallowed" * Additionally report recent drug use of at least twice in the past 7 days * Have NOT used any of the following harm reduction services in the past 6 months: * In-person community-based prevention services for people who use drugs * Overdose crisis hotlines * Online mail-order prevention supply delivery * Apps for supporting addiction treatment or recovery Inclusion Criteria (Peer Mentor Participant): * Be at least 18 years old * Be able to read and write in English * Have served as a member of the existing Community Leadership Team. Exclusion Criteria: * Are under the age of 18 * Have impaired decision making capacity at the time of screening * Do not have the ability to participate in screening and enrollment activities in any one of the following ways: * Traveling to their nearest participating Vivent Health health center * Coordinating a visit with the Vivent Health harm reduction mobile unit * Accessing and completing the online screening survey on a personal wifi/internet enabled device

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Conditions

The condition(s) this trial relates to.

Drug Overdose opiate dependence substance-related disorder poisoning prevention target

As listed by the trial registrant

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

Drug overdose Ehealth Substance related disorder

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • UW School of Medicine and Public Health

    RECRUITING

    Madison, Wisconsin, 53792, United States

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