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Showing 1–24 of 141 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional

Brief Voluntary Alcohol and Drug Intervention for Middle School Youth

NCT01081119
View directory record Official record
Conditions
Alcohol Drinking, Cigarette Smoking, Marijuana Smoking
Interventions
Project CHOICE
Behavioral
Lead sponsor
RAND
Other
Eligibility
11 Years to 15 Years
Enrollment
6,455 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 9, 2014 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD210903: A Study to Determine Subject Puffing Patterns of a Heated Tobacco Product With Four Non-Combusted Cigarette Variants in an Ambulatory Setting

NCT05307822
View directory record Official record
Conditions
Smoking, Smoking Behaviors, Tobacco Use, Tobacco Smoking
Interventions
Non-combusted cigarette variant 42001401, Non-combusted cigarette variant 42001399, Non-combusted cigarette variant 40007386, Non-combusted cigarette variant 42001402
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years and older
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
7
States / cities
Sandy Springs, Georgia • Lexington, Kentucky • Charlotte, North Carolina + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2023 · Synced Sep 2, 2026, 6:29 AM EDT
Completed No phase listed Observational

S0424 - Carcinogens in Lung Tissue From Smokers (Closed to Entry as of 7/15/07) and Non-Smokers With Newly Diagnosed Stage I, Stage II, or Stage III Non-Small Cell Lung Cancer

NCT00450281
View directory record Official record
Conditions
Lung Cancer
Interventions
chromogenic in situ hybridization, gene expression analysis, mutation analysis, polymerase chain reaction, polymorphism analysis, fluorescent antibody technique, immunohistochemistry staining method, laboratory biomarker analysis, matrix-assisted laser desorption/ionization time of flight mass spectrometry, study of socioeconomic and demographic variables, study of high risk factors
Genetic · Other · Procedure
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years to 120 Years
Enrollment
981 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
405
States / cities
Anchorage, Alaska • Tucson, Arizona • Fort Smith, Arkansas + 279 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2015 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 2 Interventional Results available

Bupropion in Helping Adults Stop Smoking

NCT00534001
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
bupropion hydrochloride, placebo
Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 2, 2026, 6:29 AM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Wound Healing Following Extraction and Ridge Preservation in Smokers and Non-smokers

NCT07372183
View directory record Official record
Conditions
Smoking, Cigarette, Alveolar Bone Grafting, Wound Healing, Bone Healing, Tooth Extraction Site Healing
Interventions
observational study
Other
Lead sponsor
Marquette University
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 2, 2026, 6:29 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Systemic Markers of Collagen Metabolism and Vitamin C in Smokers and Non-Smokers With Pelvic Organ Prolapse

NCT01548105
View directory record Official record
Conditions
Pelvic Organ Prolapse
Interventions
Blood draw for the study participants
Other
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years and older · Female only
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 16, 2014 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An Effectiveness Trial of Project ALERT

NCT00650585
View directory record Official record
Conditions
Alcohol Drinking, Smoking, Marijuana Smoking
Interventions
Project ALERT
Behavioral
Lead sponsor
Pacific Institute for Research and Evaluation
Other
Eligibility
Not listed
Enrollment
8,338 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 12, 2013 · Synced Sep 2, 2026, 6:29 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Switching to E-cigarettes in Smokers Not Interested in Quitting

NCT05703672
View directory record Official record
Conditions
Smoking Reduction
Interventions
Varenicline Tartrate, Placebo, Electronic cigarette
Drug · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 28, 2025 · Synced Sep 2, 2026, 6:29 AM EDT
Not listed Phase 4 Interventional

Nebivolol Effects on Endothelial Function and Erectile Function

NCT01885988
View directory record Official record
Conditions
Erectile Dysfunction
Interventions
Nebivolol, Sugar Pill
Drug
Lead sponsor
Martin M. Miner, MD
Other
Eligibility
25 Years to 65 Years · Male only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
3
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Promoting Home Smoking Restrictions: Biomarker Feedback to Smoking and Non-Smoking Adults

NCT01497158
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
Self-help brochure, Biomarker feedback
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 21, 2014 · Synced Sep 2, 2026, 6:29 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

NeuroControl of Nicotine Dependence

NCT06347055
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2030
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Neurobiology of Nicotine and Non-nicotine Components of Tobacco Addiction

NCT01056926
View directory record Official record
Conditions
Smoking
Interventions
Quit smoking, Nicotine patch, Placebo Patch
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 30, 2017 · Synced Sep 2, 2026, 6:29 AM EDT
Completed No phase listed Observational

Effects of Marijuana Used on Lung Function in Persons With Chronic Obstructive Pulmonary Disease (COPD)

NCT01096303
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
25 Years to 90 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 14, 2017 · Synced Sep 2, 2026, 6:29 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Cannabis Consumption and Driving Impairment Assessment on a Closed Course

NCT06059677
View directory record Official record
Conditions
Cannabis Smoking, Driving Impaired
Interventions
Active smoked cannabis, Placebo smoked cannabis
Drug
Lead sponsor
Bayliss J. Camp, PhD
Government
Eligibility
21 Years to 55 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 2 Interventional Results available

Study of Pralatrexate vs. Erlotinib for Non-Small Cell Lung Cancer After at Least 1 Prior Platinum-based Treatment

NCT00606502
View directory record Official record
Conditions
Non-small Cell Lung Cancer
Interventions
Pralatrexate, Erlotinib, Vitamin B12, Folic Acid
Drug · Dietary Supplement
Lead sponsor
Spectrum Pharmaceuticals, Inc
Industry
Eligibility
18 Years and older
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
15
States / cities
Bakersfield, California • San Diego, California • Port Saint Lucie, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2021 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Not applicable Interventional Results available

Switching to Potential Reduced Exposure Products in Adult Smokers

NCT04250727
View directory record Official record
Conditions
Tobacco Use Disorder, Oral Nicotine Pouch Use, Smoking Behaviors, Harm Reduction, Toxic Effect of Tobacco and Nicotine, Carcinogenesis
Interventions
ZYN
Device
Lead sponsor
Yale University
Other
Eligibility
21 Years to 77 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Adolescent Safer Sex Social Network Intervention

NCT00107562
View directory record Official record
Conditions
Sexual Behavior, Alcohol Drinking, Marijuana Smoking
Interventions
Adolescent Safer Sex Social Network Intervention
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
16 Years to 19 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
2
States / cities
Tampa, Florida • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 27, 2017 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 3 Interventional

Comparison of Nicotine Inhaler and/or Bupropion in Helping People to Stop Smoking and Prevent the Recurrence of Smoking

NCT00033592
View directory record Official record
Conditions
Lung Cancer
Interventions
placebo, bupropion hydrochloride, nicotine
Other · Drug
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
1,708 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
24
States / cities
Scottsdale, Arizona • Washington D.C., District of Columbia • Peoria, Illinois + 20 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2016 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy of Oral Tobacco Products Compared to a Medicinal Nicotine

NCT00710034
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Oral tobacco, Nicotine Gum
Other · Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
391 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
2
States / cities
Minneapolis, Minnesota • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Sep 2, 2026, 6:29 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers in the Nose, Throat, and Lung Tissue of Smokers and Non-Smokers

NCT00897364
View directory record Official record
Conditions
Lung Cancer, Precancerous Condition
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
45 Years and older
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2009
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 14, 2020 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Early Phase 1 Interventional Results available

Feasibility of Delivering a Quitline Based Smoking Cessation Intervention in Cancer Patients

NCT01434342
View directory record Official record
Conditions
Lung Cancer, Tobacco Use Disorder, Breast Cancer, Colorectal Cancer, Prostate Cancer
Interventions
Nicotine Replacement Patch
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 27, 2021 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Varenicline Safety, Tolerability, Pharmacokinetics and Pro-Cognitive Effects in Healthy Elderly Non-Smoking Subjects

NCT00694044
View directory record Official record
Conditions
Healthy, Non-Smoking
Interventions
varenicline, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
65 Years to 85 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
2
States / cities
Miami, Florida • Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jun 1, 2009 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Effect of Mucinex® 1200 mg on Mucociliary and Cough Clearance From the Human Lung

NCT00902707
View directory record Official record
Conditions
Mucociliary Clearance
Interventions
Mucinex 1200mg, Placebo
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 10, 2012 · Synced Sep 2, 2026, 6:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Regional Lung Deposition of Inhaled Saline Using the tPAD Device

NCT03185650
View directory record Official record
Conditions
Lung Diseases
Interventions
tPAD Device, PARI LC Star Nebulizer
Device
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 2, 2018 · Synced Sep 2, 2026, 6:29 AM EDT