NCT06678789

Brief Summary

Tobacco-free oral nicotine pouches (such as Zyn brand) are a less harmful alternative to cigarette smoking. Pouches, however, contain nicotine, and addictive substance that is not risk-free. The present study is evaluating how well nicotine pouches, at different nicotine levels, help people switch away from smoking cigarettes. People who smoke cigarettes will be asked to answer questions about their tobacco product use and provide breath samples and cheek swab samples at an in-person visit to MUSC Charleston. Participants will then be provided with a 28-day supply of nicotine pouches, and will be asked to switch from smoking to pouches over the course of 4 weeks. Finally, participants will complete a final visit at MUSC, and will answer more questions about their tobacco use 1-month later.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for not_applicable

Timeline
10mo left

Started Feb 2025

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress60%
Feb 2025Feb 2027

First Submitted

Initial submission to the registry

November 1, 2024

Completed
6 days until next milestone

First Posted

Study publicly available on registry

November 7, 2024

Completed
3 months until next milestone

Study Start

First participant enrolled

February 14, 2025

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2026

Expected
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

February 28, 2027

Last Updated

December 18, 2025

Status Verified

December 1, 2025

Enrollment Period

1.5 years

First QC Date

November 1, 2024

Last Update Submit

December 17, 2025

Conditions

Keywords

Smoking

Outcome Measures

Primary Outcomes (2)

  • Switching

    Switching will be defined at 7-day point-prevalence biochemically-confirmed abstinence from cigarettes alongside self-reported use of nicotine pouches. Non-responders and missing data will be coded as smoking.

    Day 28 and Day 56

  • Smoking Reduction

    Baseline and daily survey data will be used to calculate the change of smoking (average cigarettes per day) between groups from baseline to end of sampling.

    Day 28 and Day 56

Secondary Outcomes (1)

  • Tobacco-Free Oral Nicotine Pouches (TFNP) Use

    Day 28

Study Arms (2)

High Nicotine

EXPERIMENTAL

High dosage nicotine pouches (6mg)

Behavioral: High Nicotine Dose

Low Nicotine

EXPERIMENTAL

Low dosage nicotine pouches (3mg)

Behavioral: Low Nicotine Dose

Interventions

Will receive a 5-week supply of 3 mg Zyn pouches. Those who smoke 5-20 cigarettes per day will receive 1 tin per day = 35 tins, whereas those who smoke more will receive 2 tins/day \[70 tins\])

Low Nicotine

Will receive a 5-week supply of 6 mg Zyn pouches. Those who smoke 5-20 cigarettes per day will receive 1 tin per day = 35 tins, whereas those who smoke more will receive 2 tins/day \[70 tins\])

High Nicotine

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • 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

You may not qualify if:

  • 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).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Medical University of South Carolina

Charleston, South Carolina, 29425, United States

RECRUITING

MeSH Terms

Conditions

Cigarette SmokingTobacco Use DisorderSmoking CessationSmoking

Condition Hierarchy (Ancestors)

Tobacco SmokingBehaviorTobacco UseSubstance-Related DisordersChemically-Induced DisordersMental DisordersHealth Behavior

Study Officials

  • Amanda Palmer, PhD.

    Medical University of South Carolina

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Talia Ogretman

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 1, 2024

First Posted

November 7, 2024

Study Start

February 14, 2025

Primary Completion (Estimated)

August 1, 2026

Study Completion (Estimated)

February 28, 2027

Last Updated

December 18, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will share

De-identified self-report data and outcomes from biosample analyses will be shared upon reasonable request. Biological samples will not be shared.

Shared Documents
STUDY PROTOCOL, ANALYTIC CODE
Time Frame
Data and supporting information will be shared 1 year after study results are published.
Access Criteria
Academic researchers who are not affiliated with or funded by the tobacco industry (including their consultants and non-profit organizations) may request access.

Locations