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Can a pouch replace a cigarette? new study tests zyn as a smoking swap

NCT ID NCT06678789

Disease control Sponsor: Medical University of South Carolina 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 21, 2026 · Updated 2 times

Summary

This study looks at whether tobacco-free nicotine pouches (like Zyn) can help people switch from smoking cigarettes. Fifty smokers will get either low (3 mg) or high (6 mg) nicotine pouches to use for 4 weeks. Researchers will check if they stop smoking and how much they use the pouches instead.

What this could mean

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

Active substance
Zyn nicotine pouches (3 mg or 6 mg nicotine)
What this could lead to
If it works, this could show that nicotine pouches are a practical way for people to stop smoking cigarettes, reducing harm from smoking.
What could go wrong
This is a small, early study with only 50 people. Nicotine pouches are still addictive and may not help everyone quit smoking. Results may not apply to all smokers.

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 50 people

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

Started

Feb 2025

Expected to finish

May 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

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: * Age 21+ * current cigarette smoking (25+ days per previous month, 5 or more cigarettes/day, for greater than 1yr, greater than 100 lifetime cigarettes) * have not used TNFPs more than 5 times during their lifetime * willing and able to attend 2 in-person visits in Charleston (to assess biomarkers) * have internet access Exclusion Criteria: * Lack of proficiency in English. * Use of other combustible tobacco products (i.e., cigars, cigarillos, hookahs) and/or other non-combusted nicotine/tobacco products (i.e., e-cigarettes, smokeless tobacco) in the past 30 days. * Current use of smoking cessation medications (i.e., varenicline, bupropion, nicotine replacement therapy). * Use of marijuana within the past month, and unwillingness to abstain from marijuana during course of study. * Medical conditions contraindicated to NRT use (including pregnancy, breastfeeding, and nursing, past month myocardial infarction, current untreated cardiac arrhythmia, current severe angina, current uncontrolled severe vascular disease).

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Conditions

The condition(s) this trial relates to.

Cigarette Smoking nicotine dependence Smoking Smoking Cessation

As listed by the trial registrant

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

Cigarette smoking Nicotine dependence Smoking cessation

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

  • Medical University of South Carolina

    RECRUITING

    Charleston, South Carolina, 29425, United States

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