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Showing 1–24 of 122 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Reduced Nicotine Cigarettes Clear all
Completed Not applicable Interventional Results available

E-cigarettes for Harm Reduction in Adults With Asthma

NCT05278065
View directory record Official record
Conditions
Smoking, Asthma, Electronic Cigarette Use, Cigarette Smoking
Interventions
Nicotine
Other
Lead sponsor
Brown University
Other
Eligibility
21 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 17, 2025 · Synced Sep 3, 2026, 7:31 AM EDT
Recruiting Not applicable Interventional

E-cigarettes for Harm Reduction Among Smokers With Serious Mental Illness

NCT05815199
View directory record Official record
Conditions
Cigarette Smoking
Interventions
E-cigarette (EC), Nicotine Replacement Therapy (NRT), Harm-Reduction Counseling, Ecological Momentary Intervention (EMI) Text Messaging
Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 9, 2025 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Smoking Cessation in Women With Gynecological Conditions

NCT01989923
View directory record Official record
Conditions
Cervical Dysplasia
Interventions
Nicotine Replacement Therapy, Electronic Cigarettes
Other · Device
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 3, 2026, 7:31 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Modeling Tobacco Regulatory Impacts in Appalachia Using the Experimental Tobacco Marketplace

NCT06234722
View directory record Official record
Conditions
Tobacco Use, Cigarette Use
Interventions
Very Low Nicotine Cigarette, Reduced nicotine regulatory environment, Restriction on characterizing flavors in combustible nicotine products, Restriction on characterizing flavors in noncombustible nicotine products
Drug · Behavioral
Lead sponsor
Mikhail N Koffarnus
Other
Eligibility
21 Years and older
Enrollment
473 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Comparisons of Nicotine-free Cigarettes, Extra Low Nicotine Cigarettes vs. Medicinal Nicotine

NCT00777569
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Nicotine free cigarettes, Extra-low nicotine cigarettes, Nicotine Lozenge
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 15, 2017 · Synced Sep 3, 2026, 7:31 AM EDT
Recruiting Not applicable Interventional

Implementation of Tobacco Cessation Programming at Community Behavioral Health Sites

NCT06837220
View directory record Official record
Conditions
Nicotine Use Disorder, Smoking Cessation, Smoking Cessation Intervention
Interventions
Enhanced Courage to Quit
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 26 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of a Decision Aid for E-Cigarettes in Primary Care

NCT03836573
View directory record Official record
Conditions
Smoking, Cigarette, Smoking Cessation
Interventions
Smoking Cessation iPad Decision Aid Tool
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 100 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pilot Study to Evaluate the Safety and Efficacy of Ariva® Silver Wintergreen in Reducing Cigarette Craving in Smokers

NCT01337830
View directory record Official record
Conditions
Tobacco Use Disorder, Smoking
Interventions
Ariva® Silver Wintergreen, Silver Wintergreen
Other
Lead sponsor
Star Scientific, Inc
Industry
Eligibility
23 Years to 72 Years
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Martinsburg, West Virginia
Source: ClinicalTrials.gov public record
Updated Oct 23, 2014 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Impact of Very Low Nicotine Content Cigarettes in a Complex Marketplace

NCT03272685
View directory record Official record
Conditions
Tobacco Smoking, Nicotine Dependence
Interventions
Very Low Nicotine Content Cigarettes, Normal Nicotine Content Cigarettes
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years and older
Enrollment
799 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
6
States / cities
San Francisco, California • Minneapolis, Minnesota • Durham, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 4 Interventional

The Long-Term Quitting (Smoking Cessation) Study

NCT02564315
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Mini-Lozenge for 11 Months, Preparation Phase Behavioral Reduction Counseling, Preparation Phase Recycling Counseling, Preparation Phase Control Treatment, Cessation Phase Supportive Counseling, Cessation Phase Skill Training Counseling, Cessation Phase Brief Information, Cessation Phase Nicotine Patch + Nicotine Mini-Lozenge
Drug · Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
1,154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 16, 2020 · Synced Sep 3, 2026, 7:31 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Cigarette Harm Reduction With Electronic Cigarette Use

NCT03473483
View directory record Official record
Conditions
Nicotine Dependence, Tobacco Toxicity, Nicotine Dependence, Cigarettes, Cardiovascular Risk Factor, Nicotine Withdrawal
Interventions
SREC
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2022 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 2 Interventional Results available

Combination Nicotine Patch / Lorcaserin for Smoking Cessation

NCT02906644
View directory record Official record
Conditions
Nicotine Dependence
Interventions
lorcaserin, nicotine patch, placebo lorcaserin
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 6, 2019 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Impact of Alternative Nicotine-Delivery Products on Combustible Cigarette Use

NCT04084210
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Juul Electronic cigarette, Very Low Nicotine Cigarettes, Active Nicotine Patch, Placebo Patch
Device · Other · Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years and older
Enrollment
209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 4 Interventional Results available

Identifying Treatments to Motivate Smokers to Quit

NCT01122238
View directory record Official record
Conditions
Smoking, Smoking Cessation, Motivation, Nicotine Dependence
Interventions
Nicotine Patch, Nicotine Gum, Motivational Interviewing, Smoking Reduction, No Intervention, Nicotine Patch + Nicotine Gum
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
517 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 15, 2015 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Project 2, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in Opioid Abusers

NCT02250664
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Very low nicotine content cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 70 Years
Enrollment
775 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Sep 3, 2026, 7:31 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Noncombustible Nicotine Delivery Systems as Potential Harm Reduction Tools for Persistent Cigarette Smokers

NCT06372899
View directory record Official record
Conditions
E-cigarette Use, Cigarette Smoking, Harm Reduction, Tobacco Use
Interventions
E-cigarettes, Oral nicotine pouches
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette Smoking Among Young Adults

NCT04340947
View directory record Official record
Conditions
Cigarette Smoking, Smoking Behaviors
Interventions
Very low nicotine cigarette: menthol, Very low nicotine cigarette: non-mentol
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 34 Years
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tobacco/Nicotine Purchase Patterns Across SES

NCT06795997
View directory record Official record
Conditions
Smoking Behaviors, Smoking, Non-Tobacco Products, Smoking, Cigarette
Interventions
Tax Conditions, Control Condition
Behavioral
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years and older
Enrollment
663 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Sep 3, 2026, 7:31 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on Cigarette Use Behavior

NCT06609083
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Cigarette Smoking
Interventions
THC 30mg, THC 5mg, THC 0mg, Cigarette Full Nicotine, Cigarette Reduced Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 3, 2026, 7:31 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Brain/Craving Response to Smoking Cues After Oral Nicotine Pouch Use

NCT07698470
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Oral Nicotine Pouch, Smoking Cue Reactivity Task
Other · Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
21 Years to 55 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Switching to Reduced Oxidant or Nicotine Content Cigarettes in Smokers

NCT02415270
View directory record Official record
Conditions
Tobacco Smoking Behavior
Interventions
Reduced Nicotine Cigarettes, Reduced ROS/RNS, Control
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 26, 2018 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Strategies to Promote Cessation in Smokers Who Are Not Ready To Quit

NCT02905656
View directory record Official record
Conditions
Smoking Cessation
Interventions
Brief Advice, Motivational Interviewing, Rate Reduction, Pharmacological, MI+RR
Behavioral · Drug
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
903 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Sep 3, 2026, 7:31 AM EDT
Completed Not applicable Interventional Results available

Quit or Switch: E-cigarette Study

NCT05525078
View directory record Official record
Conditions
Tobacco Use
Interventions
e-cigarette, Nicotine patch, Nicotine lozenge
Behavioral · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 25, 2024 · Synced Sep 3, 2026, 7:31 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

STEPS: Substance Use Trial of E-cigarettes or Pharmacotherapy for Smoking

NCT06922617
View directory record Official record
Conditions
Tobacco Use, Substance Use Disorders
Interventions
Switching to E-Cigarette, Quitting using Medication, Counseling
Behavioral · Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
4
States / cities
Charleston, South Carolina • Conway, South Carolina • Greenville, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 3, 2026, 7:31 AM EDT