Cigarette SmokingNCT06373679
Switch or Quit R01
A study testing Switching to E-Cigarette and Switching using Medication in people with Cigarette Smoking and Smoking Behaviors, run by Medical University of South Carolina at 1 site in United States.
Trial summary
This study evaluates whether non-cigarette tobacco products (e-cigarettes) can help smokers quit smoking as compared to traditional quit methods (nicotine replacement therapy or varenicline/Chantix). Read more about this study
- Who is it for?
- Ages 21 years and olderHealthy volunteers can take part
- Conditions the study is for
- Cigarette Smoking, Smoking Behaviors
- What is being tested?
- Switching to E-Cigarette and Switching using Medication
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 225 participants
- Where
- 1 siteUnited States
- Study dates
- 10 Jul 2024to 1 May 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 21 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Adults 21+ who previously had a quit attempt using FDA-approved pharmacotherapy.
- Interest in reducing harms from tobacco use or quitting smoking
Who cannot join
- Pregnant, breastfeeding, or trying to become pregnant.
- Household member currently enrolled in the study
- Planning to move out of the area within the next 7 months
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Medical Univeristy of South Carolina
Charleston, South Carolina, 29425
Tracy Smith, PhD, 8437925164, smithtra@musc.edu
About this study
Official title: Non-cigarette Tobacco Products as Harm Reduction Tools in Smokers Who Failed to Quit With Traditional Methods
This study evaluates whether non-cigarette tobacco products (e-cigarettes) can help smokers quit smoking as compared to traditional quit methods (nicotine replacement therapy or varenicline/Chantix). Participants in this study will be randomly assigned to one of two groups, then will have a choice between the offered products of that group. Participants in the e-cigarette group will have a choice of e-cigarette brand and flavor. Participants in the medication group will have choice between nicotine replacement therapy (patches and lozenges) or varenicline, also known as Chantix. Participation will last 6 months and will include weekly phone calls for the initial 7-weeks plus a 11-week phone call and a 6-month follow-up visit. Participants will also complete electronic daily diaries during the first 7-weeks.
Read the detailed description
Even though e-cigarettes have risen in prevalence over the last decade, data on the use of these products as harm reduction tools for smokers who try to switch completely is lacking.
These data are urgently needed for several reasons.
- Clinicians cannot provide clear guidance to smokers who may be interested in switching. Questions from medical patients about e-cigarettes are on the rise, and data show that medical providers are providing mixed messages about the safety and utility of e-cigarettes, with some physicians discouraging their use and some recommending them as cessation aids.
- Public health organizations are also providing mixed messages about the health risks of non-cigarette tobacco products-with some not recommending their use at all (The American Cancer Society, American Lung Association), and some acknowledging that complete switching to e-cigarettes would reduce health risks compared to continued smoking, but not recommending the use of these products over traditional methods (Centers for Disease Control, Food and Drug Administration).
- In the absence of clear messaging about non-cigarette products, smokers who fail with traditional methods are continuing to smoke cigarettes, the most harmful tobacco product available.
The reviews underscore the need for additional data on this topic, especially data comparing the products to pharmacotherapy. The goal of the proposed study is to provide one of the first well-designed randomized controlled trials that addresses whether alternative tobacco products (e-cigarettes) have the potential to serve as harm reduction tools in a critical population-smokers who have tried to quit smoking using FDA-approved pharmacotherapy and failed to do so.
- Conditions
- Cigarette Smoking, Smoking Behaviors
- Being tested
- Switching to E-Cigarette, Switching using Medication
- Medical subject headings
- Cigarette Smoking, Smoking
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Switching to E-CigaretteBehavioural
Participants will receive eleven weeks of e-cigarette products with instructions to switch completely at switch date
Switching using MedicationBehavioural
Participants will receive eleven weeks of FDA approved medication, either varenicline or combination NRT, with instructions to quit smoking cigarettes at quit date
| Study group | Role | What they receive |
|---|---|---|
| Choice of Medication | Experimental | This arm includes participants randomly assigned to the Meds Group. Participants will choose between 1) combo NRT and 2) varenicline. The NRT will consist of transdermal NRT and nicotine lozenge. Participants will receive study product for 11 weeks. Receives: Behavioral: Switching using Medication |
| Choice of E-Cigarette | Experimental | This arm includes participants randomly assigned to the E-Cigarette Group. Participants will choose between two different brands of e-cigarettes and choose up to two different flavors. Participants will receive study product for 11 weeks. Receives: Behavioral: Switching to E-Cigarette |
What is being measured
The primary outcome is the main question the study is designed to answer.
Biochemically-confirmed 7-day point prevalence abstinence from cigarettes on timeline followback
Self-reported zero cigarettes in the past 7 days on timeline followback at Week 11 + expired carbon monoxide < 6 ppm
Measured: 11 Weeks
Secondary outcomes (1)
Greater than 50% reduction in cigarette smoking
Average reduction in the number of cigarettes smoked per day on 7-day timeline followback at Week 11 of at least 50% or greater compared to average baseline number of cigarettes smoked per day on 7 day timeline followback
Measured: 11 Weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Apr 2024
- Study start10 Jul 2024
- Primary completion1 May 2027 (estimated)
- Study completion1 May 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Cigarette SmokingStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 225 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Medical University of South Carolina
- Sponsor type
- University, hospital or other
- Collaborators
- National Institute on Drug Abuse (NIDA)
- Responsible party
- Principal investigator, Tracy Smith, Medical University of South Carolina
- Investigators
- Tracy Smith, Principal investigator, smithtra@musc.edu
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06373679
- Sponsor's protocol ID
- Pro00125514
- Other IDs
- 1R01DA056445-01A1
- Status last verified
- Jul 2026
- First submitted
- 5 Apr 2024
- Last updated
- 13 Jul 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Non-cigarette Tobacco Products as Harm Reduction Tools in Smokers Who Failed to Quit With Traditional Methods
- ClinicalTrials.gov ID
- NCT06373679
- Acronym / sponsor ID
- Pro00125514
- Conditions
- Cigarette Smoking, Smoking Behaviors
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 225 participants (estimated)
- Lead sponsor
- Medical University of South CarolinaUniversity, hospital or other
- Collaborators
- National Institute on Drug Abuse (NIDA)
- Study start
- 10 Jul 2024 (actual)
- Primary completion
- 1 May 2027 (estimated)
- Study completion
- 1 May 2027 (estimated)
- First posted
- 18 Apr 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study evaluates whether non-cigarette tobacco products (e-cigarettes) can help smokers quit smoking as compared to traditional quit methods (nicotine replacement therapy or varenicline/Chantix). Participants in this study will be randomly assigned to one of two groups, then will have a choice between the offered products of that group. Participants in the e-cigarette group will have a choice of e-cigarette brand and flavor. Participants in the medication group will have choice between nicotine replacement therapy (patches and lozenges) or varenicline, also known as Chantix. Participation will last 6 months and will include weekly phone calls for the initial 7-weeks plus a 11-week phone call and a 6-month follow-up visit. Participants will also complete electronic daily diaries during the first 7-weeks.
Detailed description
Even though e-cigarettes have risen in prevalence over the last decade, data on the use of these products as harm reduction tools for smokers who try to switch completely is lacking.
These data are urgently needed for several reasons.
- Clinicians cannot provide clear guidance to smokers who may be interested in switching. Questions from medical patients about e-cigarettes are on the rise, and data show that medical providers are providing mixed messages about the safety and utility of e-cigarettes, with some physicians discouraging their use and some recommending them as cessation aids.
- Public health organizations are also providing mixed messages about the health risks of non-cigarette tobacco products-with some not recommending their use at all (The American Cancer Society, American Lung Association), and some acknowledging that complete switching to e-cigarettes would reduce health risks compared to continued smoking, but not recommending the use of these products over traditional methods (Centers for Disease Control, Food and Drug Administration).
- In the absence of clear messaging about non-cigarette products, smokers who fail with traditional methods are continuing to smoke cigarettes, the most harmful tobacco product available.
The reviews underscore the need for additional data on this topic, especially data comparing the products to pharmacotherapy. The goal of the proposed study is to provide one of the first well-designed randomized controlled trials that addresses whether alternative tobacco products (e-cigarettes) have the potential to serve as harm reduction tools in a critical population-smokers who have tried to quit smoking using FDA-approved pharmacotherapy and failed to do so.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Choice of Medication | Experimental | Behavioral: Switching using MedicationThis arm includes participants randomly assigned to the Meds Group. Participants will choose between 1) combo NRT and 2) varenicline. The NRT will consist of transdermal NRT and nicotine lozenge. Participants will receive study product for 11 weeks. |
| Choice of E-Cigarette | Experimental | Behavioral: Switching to E-CigaretteThis arm includes participants randomly assigned to the E-Cigarette Group. Participants will choose between two different brands of e-cigarettes and choose up to two different flavors. Participants will receive study product for 11 weeks. |
Who may qualify
- Ages
- 21 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Adults 21+ who previously had a quit attempt using FDA-approved pharmacotherapy.
- Interest in reducing harms from tobacco use or quitting smoking
Key exclusion criteria (3 listed)
- Pregnant, breastfeeding, or trying to become pregnant.
- Household member currently enrolled in the study
- Planning to move out of the area within the next 7 months
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Switching to E-CigaretteParticipants will receive eleven weeks of e-cigarette products with instructions to switch completely at switch date | Behavioural | Choice of E-Cigarette |
| Switching using MedicationParticipants will receive eleven weeks of FDA approved medication, either varenicline or combination NRT, with instructions to quit smoking cigarettes at quit date | Behavioural | Choice of Medication |
Primary outcome
Biochemically-confirmed 7-day point prevalence abstinence from cigarettes on timeline followback
Time frame: 11 Weeks
Self-reported zero cigarettes in the past 7 days on timeline followback at Week 11 + expired carbon monoxide < 6 ppm
1 secondary outcome
Greater than 50% reduction in cigarette smoking
Time frame: 11 Weeks
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Jul 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Tracy Smith principal investigator
smithtra@musc.edu
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Switching to E-Cigarette and Switching using Medication in people with Cigarette Smoking and Smoking Behaviors, run by Medical University of South Carolina at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 13 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Tracy Smith, PhD ((843)-792-5164, smithtra@musc.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Biochemically-confirmed 7-day point prevalence abstinence from cigarettes on timeline followback (time frame: 11 Weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Jul 2026.