Independent directory Public ClinicalTrials.gov records United States
Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 4:07 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 481–504 of 1,612 matching trials from the live ClinicalTrials.gov search.
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of Electronic Cigarettes on Lung Biology

NCT02188511
Conditions
Lung Disease, Lung Disorder
Interventions
Group A, Group B, Group C, Group D, Group E
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
21 Years to 85 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Conditions
Breast Cancer, DCIS
Interventions
THRIVE Online PAT Program
Behavioral
Lead sponsor
Joanna Arch
Other
Eligibility
21 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boulder, Colorado
Conditions
Lung Cancer
Interventions
smoking cessation intervention, bupropion hydrochloride, nicotine, psychosocial assessment and care
Behavioral · Drug · Procedure
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
175
States / cities
Anniston, Alabama • Mobile, Alabama • Phoenix, Arizona + 115 more
Conditions
Smoking, Cigarette
Interventions
Low Nicotine Content Cigarettes, Control message, Test message
Drug · Other
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
21 Years and older
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Conditions
Smoking Cessation
Interventions
Nicotine Replacement Therapy
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Tobacco Dependence
Interventions
Very low nicotine content cigarettes, Normal nicotine content cigarettes
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 60 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Hershey, Pennsylvania
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
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sex Differences in E-cig Perception: Study 1

NCT05432830
Conditions
Nicotine Addiction, E-Cig Use, Cigarette Smoking, Sex Differences
Interventions
E-liquid Flavor 1, E-liquid Flavor 2, E-liquid Flavor 3
Other
Lead sponsor
Yale University
Other
Eligibility
21 Years to 44 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
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
Completed Not applicable Interventional Accepts healthy volunteers

Electronic Hookah and Endothelial Cell Function

NCT04133376
Conditions
Smoking, Endothelial Dysfunction
Interventions
Electronic hookah vaping with nicotine, Electronic hookah vaping without nicotine
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 39 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Los Angeles, California
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 Phase 4 Interventional Results available

Health Systems Reach Interventions Project

NCT04199117
Conditions
Smoking, Cigarette, Smoking Cessation
Interventions
Varenicline, Combination nicotine patch and nicotine mini-lozenge treatment, Monetary incentives for initiating treatment, Automated tailored outreach, Care management, Wisconsin Tobacco Quit Line referral, Primary care provider referral, Untailored outreach, Multiple smoking cessation coaching calls
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Madison, Wisconsin
Completed Phase 2 Interventional Results available

Effects of Naltrexone on Nicotine Reinforcement

NCT00270231
Conditions
Tobacco Dependence
Interventions
Naltrexone, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers

Network-Targeted Neuromodulation for Nicotine Dependence in Schizophrenia

NCT06389266
Conditions
Schizophrenia, Nicotine Dependence
Interventions
Repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Nashville, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Varenicline on Brain Activity During Nicotine Abstinence

NCT00602927
Conditions
Nicotine Dependence
Interventions
Varenicline, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers

CSD201002: Study to Assess Nicotine Uptake From P10 Nicotine Pouches

NCT05081154
Conditions
Smoking, Tobacco Use
Interventions
Product A, Product B, Product C, Product D, Product E, Product F, Product G
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Knoxville, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers

Digital Cognitive Behavior Therapy Program for Suicide Prevention

NCT03595254
Conditions
Suicidal Ideation, Depression, Anxiety
Interventions
Thrive
Behavioral
Lead sponsor
Montana State University
Other
Eligibility
18 Years and older
Enrollment
725 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Bozeman, Montana
Recruiting Not applicable Interventional Accepts healthy volunteers

Thrive Initiative Parent-Education Programming Study

NCT06823518
Conditions
Child Maltreatment, Parenting, Child Wellbeing
Interventions
Thrive Initiative Parent-Education Programming
Behavioral
Lead sponsor
Penn State University
Other
Eligibility
18 Years and older
Enrollment
480 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
University Park, Pennsylvania
Completed Phase 2 Interventional Results available

Effect of Ramelteon on Smoking Abstinence

NCT02560324
Conditions
Tobacco Use Disorder
Interventions
Ramelteon, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Prostate Cancer, Erectile Dysfunction
Interventions
questionnaires, three in-person sessions, monthly phone calls, Acceptance and Commitment Therapy for Erectile Dysfunction (ACT-ED), Enhanced Monitoring and Education (EME)
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years and older · Male only
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
1
States / cities
New York, New York
Completed Not applicable Interventional Accepts healthy volunteers Results available

Project 2 Cigarette and E-cigarette Nicotine Content and E-liquid Flavors

NCT03185546
Conditions
Smoking
Interventions
NNC Spectrum Cigarette, VLNC Spectrum Cigarette, Moderate nicotine level e-liquid, Low nicotine level e-liquid, Tobacco Flavors, Tobacco and non-tobacco e-liquid flavors
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
2
States / cities
Winston-Salem, North Carolina • Philadelphia, Pennsylvania
Conditions
THC, Cannabis, Cannabis Use, Cannabis Smoking, Tobacco Use, Vaping
Interventions
Cannabis, Nicotine, Pax Loose Leaf Vaporizer, Placebo Marijuana
Drug · Device · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
San Francisco, California
Conditions
Tobacco Use, Tobacco Smoking, Cigarette Smoking, Smokeless Tobacco Cessation
Interventions
Electronic Cigarette, Oral Nicotine Pouch
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Buffalo, New York
Recruiting Not applicable Interventional Accepts healthy volunteers

Evaluating the Impact of CONNECT in a Multilingual Population

NCT07111936
Conditions
Smoking Cessation, Smoking Cessation Counseling Ability and Practice, Smoking Cessation Counselling, Lung Cancer Screening
Interventions
CONNECT Intervention for multilingual populations, Saliva Sample, Interview
Behavioral · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
50 Years to 80 Years
Enrollment
439 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
San Francisco, California