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ClinicalTrials.gov public records Last synced Sep 15, 2026, 12:57 PM EDT

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Showing 1–24 of 2,321 matching trials from the live ClinicalTrials.gov search.
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Conditions
Tobacco Smoking Behavior
Interventions
Motivational Interview, Usual best practices
Behavioral
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
17 Years and older
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
3
States / cities
Boston, Massachusetts • Lawrence, Massachusetts • Worcester, Massachusetts
Recruiting No phase listed Observational Accepts healthy volunteers

Effects of E-cigarette Use on Health

NCT06610838
Conditions
Electronic Cigarette Use
Interventions
Health Assessments
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Madison, Wisconsin
Completed Not applicable Interventional Accepts healthy volunteers

Testing Different Theories of Smoking Cessation: An Intervention Study

NCT01209897
Conditions
Smoking Cessation
Interventions
Smoking cessation booklet
Behavioral
Lead sponsor
University of Hawaii
Other
Eligibility
18 Years and older
Enrollment
1,826 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Honolulu, Hawaii
Completed Not applicable Interventional Accepts healthy volunteers

Short-Term Cardiovascular Effects of E-Cigarettes: Influence of E-Liquid pH

NCT04449510
Conditions
Cardiovascular Risk Factor, Nicotine Dependence
Interventions
Electronic Cigarette
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 70 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
2
States / cities
San Francisco, California
Completed Not applicable Interventional Accepts healthy volunteers Results available

Outcomes From a Mobile Smoking Cessation Program During a Monitoring Period of 6 Months

NCT03295643
Conditions
Smoking Cessation
Interventions
Mobile smoking cessation program and CO breath sensor device
Device
Lead sponsor
Jennifer Marler, MD
Industry
Eligibility
18 Years to 65 Years
Enrollment
319 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Redwood City, California
Recruiting Not applicable Interventional Accepts healthy volunteers

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

NCT06922617
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
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Heart Rate Variability Biofeedback for Smoking Cessation Treatment

NCT05224050
Conditions
Tobacco Smoking
Interventions
Cognitive-Behavioral Smoking Cessation, Heart Rate Variability Biofeedback, Nicotine patch
Behavioral · Biological · Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
21 Years to 50 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
New Brunswick, New Jersey
Conditions
Smoking Cessation
Interventions
Quitline Treatment (QT), App-based Treatment (mHealth)
Other
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
3
States / cities
Coral Gables, Florida • Gainesville, Florida • Tampa, Florida
Completed Phase 2 Interventional

Treatment to Quit Smoking

NCT00018161
Conditions
Smoking
Interventions
Mecamylamine, Nicotine Patch, Cigarette brand switching
Drug · Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2001
U.S. locations
1
States / cities
Durham, North Carolina
Completed Phase 4 Interventional Results available

Tobacco Use Treatment in Cancer Patients

NCT03482583
Conditions
Smoking, Cigarette
Interventions
Nicotine Replacement Therapy, Referral to AHEC/Quitline
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
5
States / cities
Gainesville, Florida
Completed Not applicable Interventional Results available

WeChat Quit Coach Pilot Study

NCT05130788
Conditions
Smoking Cessation
Interventions
WeChat Quit Coach, Leaflet, Optional Nicotine Replacement Therapy (NRT) Patches or Lozenges
Behavioral · Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
New York, New York
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Not listed
Lead sponsor
UConn Health
Other
Eligibility
16 Years to 45 Years · Female only
Enrollment
182 participants
Timeline
2018 – 2023
U.S. locations
6
States / cities
Denver, Colorado • Farmington, Connecticut • Hartford, Connecticut + 2 more
Recruiting Not applicable Interventional Accepts healthy volunteers

The Impact of Menthol Flavoring on Switching in Adult Menthol Smokers

NCT05555069
Conditions
Smoking Reduction
Interventions
Menthol-flavored electronic cigarette, Tobacco-flavored electronic cigarette
Other
Lead sponsor
Nikki Nollen, PhD, MA
Other
Eligibility
21 Years and older
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Kansas City, Missouri
Completed Phase 3 Interventional Results available

Smoking-Cessation and Stimulant Treatment (S-CAST)

NCT01077024
Conditions
Cocaine Dependence, Methamphetamine Dependence, Nicotine Dependence
Interventions
Smoking-cessation treatment
Other
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
538 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
12
States / cities
Tucson, Arizona • Rancho Cucamonga, California • Tarzana, California + 9 more
Completed Not applicable Interventional Accepts healthy volunteers

Vigorous Exercise for Depressed Smokers

NCT01860924
Conditions
Nicotine Dependence, Depression
Interventions
exercise, health education
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Not listed No phase listed Observational Accepts healthy volunteers

Risk Perception Among Quitting Smokers

NCT00384696
Conditions
Smoking
Interventions
Nicotine Replacement Therapy, Questionnaire
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 65 Years
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2020
U.S. locations
1
States / cities
Houston, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Obesity Prevention After Smoking Cessation in Menopause

NCT00064961
Conditions
Obesity, Menopause
Interventions
Individualized dietary-control and exercise program, Weight-management and smoking cessation maintenance, Smoking Cessation program
Behavioral
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
45 Years to 59 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2006
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Conditions
Smoking, Smoking Cessation, Tobacco Use Cessation
Interventions
Usual Care, "Nudges"
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Obesity, Smoking Cessation, Bariatric Surgery Patients
Interventions
Naltrexone Hydrochloride, Bupropion HCl Extended Release, Cognitive-Behavioral Therapy
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Completed Not applicable Interventional Accepts healthy volunteers Results available

Implementation of Genomics in Substance Use Disorder Treatment

NCT04768114
Conditions
Tobacco Use Disorder, Smoking Cessation, Tobacco Use Cessation
Interventions
Genetically-Informed RiskProfile, Brief Cessation Advice
Behavioral · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Smoking Cessation, Tobacco Use Cessation, Tobacco Smoking
Interventions
Nicorette, Tobacco Quit-line, Brief Behavioral Counseling, Intensive Behavioral Counseling
Drug · Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
608 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Miami, Florida
Conditions
Smoking
Interventions
transdermal nicotine replacement therapy
Drug
Lead sponsor
Duke University
Other
Eligibility
21 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Durham, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers

Assessing the Effect of Flavor on ENDS Users' Experiences and Exposures

NCT04192032
Conditions
Electronic Cigarette Use
Interventions
Preferred Juul pod flavor (5% nicotine), Classic Tobacco Juul pod flavor (5% nicotine), Preferred flavor with HWL, Preferred flavor, 3% nicotine, Preferred flavor, 0% nicotine
Other
Lead sponsor
Florida International University
Other
Eligibility
18 Years to 24 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Miami, Florida
Conditions
Healthy Volunteers, Vaping Teens
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
13 Years to 120 Years
Enrollment
726 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland