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Showing 1–24 of 60 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Healthy Smokers Clear all
Recruiting No phase listed Observational Accepts healthy volunteers

Collection of Airway, Blood and/or Urine Specimens From Subjects for Research Studies

NCT01776398
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD), Smoking, Smoking Cessation, Idiopathic Pulmonary Fibrosis (IPF), Rheumatoid Arthritis-Associated Interstitial Lung Disease, Scleroderma-Associated Interstitial Lung Disease (SSC-ILD)
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Bioequivalence Study of 21 Milligram (mg) Nicotine Transdermal Patches (NicoDerm CQ, GlaxoSmithKline [GSK] Dungarvan) Compared to the Current Marketed 21 mg Nicotine Transdermal Patches (NicoDerm CQ, Alza) in Healthy Adult Smokers

NCT05024747
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
NicoDerm CQ patch (GSK Dungarvan), NicoDerm CQ (Alza)
Drug
Lead sponsor
HALEON
Industry
Eligibility
21 Years to 55 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 20, 2024 · Synced Sep 7, 2026, 4:38 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of the Effect of a Nasal Allergen Challenge With Dermatophagoides Farinae Extract on Nasal Airway Inflammation in Allergic Individuals, Comparing E-cigarette Users to Cigarette Smokers and Non-smokers.

NCT03023397
View directory record Official record
Conditions
Healthy Participants, Tobacco Smokers
Interventions
Der f
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 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 Jun 3, 2021 · Synced Sep 7, 2026, 4:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Memory and Picture Viewing Study

NCT00736203
View directory record Official record
Conditions
Healthy, Brain Reactivity of Non-smokers Undergoing fMRI Scanning
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 55 Years
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 6, 2013 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Comparability Study of the Phase 3 Lot and a Single Commercial Lot of NicVAX in Healthy Adult Smokers

NCT01375933
View directory record Official record
Conditions
Smoking
Interventions
NicVAX Vaccine
Biological
Lead sponsor
Nabi Biopharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
6
States / cities
Huntsville, Alabama • San Diego, California • Melbourne, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated May 13, 2012 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

United States Pre-Market Tobacco Application Pharmacokinetics

NCT03719391
View directory record Official record
Conditions
Nicotine Dependence, Nicotine Dependence, Cigarettes, Tobacco Use, Tobacco Smoking
Interventions
Virginia Tobacco flavored JUUL 5% ENDS, Cool Mint flavored JUUL 5% ENDS, Mango flavored JUUL 5% ENDS, Creme Brulee flavored JUUL 5% ENDS, VUSE Solo e-cigarette, Nicorette White Ice Mint 4mg nicotine polacrilex gum, Usual Brand combustible cigarette
Other
Lead sponsor
Juul Labs, Inc.
Industry
Eligibility
21 Years to 65 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 13, 2021 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Supplementary Vitamins on Oxidant Gene Expression in the Lungs of Healthy Smokers

NCT00565214
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Group 1, Group 2
Dietary Supplement
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 70 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 24, 2017 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Delivery From Novel Non-Tobacco Electronic System in Smokers

NCT02575885
View directory record Official record
Conditions
Cigarette Smoker, Current Smoker, Healthy Subject
Interventions
Electronic Cigarette, Laboratory Biomarker Analysis, Pharmacological Study, Questionnaire Administration
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reduced Exposure Study Using THS 2.2 Menthol With 5 Days in a Confinement Setting Followed by 86 Days in an Ambulatory Setting

NCT01989156
View directory record Official record
Conditions
Smoking
Interventions
THS 2.2 Menthol (mTHS 2.2), Menthol Conventional Cigarette (mCC), Smoking Abstinence (SA)
Other
Lead sponsor
Philip Morris Products S.A.
Industry
Eligibility
22 Years and older
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
2
States / cities
Daytona Beach, Florida • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 23, 2020 · Synced Sep 7, 2026, 4:38 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Smoking-induced EGF-dependent Reprogramming of Airway Basal Cell Function

NCT01974180
View directory record Official record
Conditions
Smoking, COPD, Chronic Obstructive Pulmonary Disease
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 25, 2017 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Green Tea Anticancer Mechanisms in Smokers

NCT01162642
View directory record Official record
Conditions
Cancer
Interventions
Green Tea, Placebo
Dietary Supplement · Other
Lead sponsor
Philip Diaz
Other
Eligibility
23 Years to 40 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 20, 2015 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Pilot Study to Evaluate the Efficacy of Ariva® Silver Wintergreen, a Smoking Aversive Lozenge

NCT01336816
View directory record Official record
Conditions
Tobacco Use Disorder, Smoking
Interventions
Ariva Silver Wintergreen, Placebo Wintergreen
Other
Lead sponsor
Star Scientific, Inc
Industry
Eligibility
23 Years to 72 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Martinsburg, West Virginia
Source: ClinicalTrials.gov public record
Updated Oct 23, 2014 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study to Evaluate Nicotine Uptake and Biomarkers in Smokers Using mybluTM Electronic Cigarettes

NCT04430634
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Myblu variant A, Myblu variant B, Myblu variant C, Myblu variant D, Myblu variant E, Myblu variant F, Myblu variant G, Myblu variant H
Other
Lead sponsor
Fontem US LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 6, 2021 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A 26-week Extension of the ZRHR-ERS-09-US Study Evaluating Biological and Functional Changes in Healthy Smokers After Switching to THS 2.2

NCT02649556
View directory record Official record
Conditions
Smoking
Interventions
THS 2.2, CC
Other
Lead sponsor
Philip Morris Products S.A.
Industry
Eligibility
30 Years and older
Enrollment
672 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
19
States / cities
Tempe, Arizona • Clearwater, Florida • Daytona Beach, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2020 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Pulmonary Safety and Pharmacokinetics of Zolmitriptan Inhalation Powder

NCT02905227
View directory record Official record
Conditions
Migraine
Interventions
CVT-427 (zolmitriptan inhalation powder)
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
3
States / cities
North Dartmouth, Massachusetts • Lincoln, Nebraska • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2018 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 4 Interventional Results available

Smoking Cessation Study In Healthy Adolescent Smokers

NCT01312909
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline 1mg BID, Varenicline 0.5mg BID, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years to 19 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
56
States / cities
Ozark, Alabama • Goodyear, Arizona • Little Rock, Arkansas + 46 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2018 · Synced Sep 7, 2026, 4:38 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Evaluation of Acute and Subacute Effects of Nicotine Free Electronic Cigarette(NCFE) Vapors

NCT02585791
View directory record Official record
Conditions
Healthy Lifetime Non-smokers
Interventions
Propylene Glycol, vegetable glycerin, PG+VG
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 13, 2020 · Synced Sep 7, 2026, 4:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cigarette Smoke and Susceptibility to Influenza Infection

NCT00448617
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 28, 2015 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

GeoScan and Remote Geo Smoking Study: Neural and Behavioral Correlates of Smokers' Exposure to Retail Environments

NCT04279483
View directory record Official record
Conditions
Smoking, Tobacco, Smoking, Smoking, Cigarette
Interventions
Tobacco retailer, Non-tobacco retailer
Behavioral
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years to 65 Years
Enrollment
343 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 13, 2025 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

To Assess the Bioequivalence of the 4mg Prototype Mini Nicotine Lozenge to the Reference Product (Nicorette) in Healthy Smokers

NCT03543137
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine Prototype Mini lozenge, Nicorette Mini Lozenge
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years to 55 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 3, 2019 · Synced Sep 7, 2026, 4:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Bronchoscopy Assisted Sampling of Cells and Fluid From the Lower Respiratory Tract of Human Subjects

NCT00840723
View directory record Official record
Conditions
Respiratory Diseases
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 4, 2013 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Avocado and Postprandial Responses

NCT06818032
View directory record Official record
Conditions
Healthy, Healthy Volunteer, Healthy Volunteers, Healthy Adult, Healthy Male and Female Subjects, Healthy Subjects, Healthy Volunteers Only, Healthy Non-smokers
Interventions
Negative control, Avocado, Fat and fiber addition
Other
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 7, 2026, 4:38 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study To Investigate The Metabolism Of GW876008 In Smokers Compared To Non-Smokers.

NCT00429728
View directory record Official record
Conditions
Healthy Subjects
Interventions
GW876008
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 45 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Willingboro, New Jersey
Source: ClinicalTrials.gov public record
Updated May 17, 2009 · Synced Sep 7, 2026, 4:38 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Range of Neutrophil Response to 20,000 EU of Clinical Center Reference Endotoxin in Otherwise Healthy Smokers

NCT00753870
View directory record Official record
Conditions
Healthy Smokers
Interventions
CCRE inhalation
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 50 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2011 · Synced Sep 7, 2026, 4:38 PM EDT