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Stickers on vapes may boost quit intentions, study finds

NCT ID NCT05714982

Knowledge-focused Sponsor: UNC Lineberger Comprehensive Cancer Center Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested whether placing health warning labels directly on e-cigarette devices and refills makes adult vapers more likely to quit. Over 1,300 participants aged 21+ were randomly assigned to receive no warnings, text warnings, or pictorial warnings on their devices. Researchers measured quit intentions and knowledge of vaping harms over four weeks.

What this could mean

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

What this could lead to
If successful, this could show that simple warning labels help vapers quit without switching to cigarettes.
What could go wrong
This is a completed behavioral study, not a treatment trial. Results may not apply to all vapers or lead to real-world behavior change.

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

1,369 people

The number who actually took part.

Started

Feb 2023

Finished

Jul 2024

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

21 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Be 21 years or older * Currently vape every day or some days * Use an e-cigarette that contains nicotine * Be able to attend 2 in-person appointments * Be able to bring in e-cigarette device and 2 weeks' worth or refills to 2 in-person appointments * Be willing to let us apply a sticker to the device and refill materials * Be willing to use only the labeled e-cigarette during the study * Be able to complete 3 surveys online at home * Be able to read and speak English * Be able to complete a survey on a computer without help Exclusion Criteria: * Pregnant people * If e-cigarette device cannot be labeled * Vapers concurrently enrolled in any research studies about vaping or using other tobacco products * Vapers who live in the same household as someone who has enrolled in the study

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Conditions

The condition(s) this trial relates to.

Tobacco Use Vaping

As listed by the trial registrant

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

Vaping behaviors

Contacts and locations

Locations

  • Ewald & Wasserman Research Consultants, LLC

    San Francisco, California, 94104, United States

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