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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Nicotine Exposure Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Cotinine Metabolism in Infants and Children

NCT00994591
View directory record Official record
Conditions
Secondhand Smoke Exposure
Interventions
Pharmacokinetic dosing
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
2 Months to 72 Months
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 23, 2013 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Study to Evaluate Changes in Smokers Using on!® Nicotine Pouches

NCT05664672
View directory record Official record
Conditions
Tobacco Use
Interventions
OTDN Product 1, OTDN Product 2, OTDN Product 3, No Tobacco
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
3
States / cities
Lexington, Kentucky • Springfield, Missouri • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 8, 2024 · Synced Jul 22, 2026, 4:39 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 Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

P60 Program Project Grant-Outreach for Smoke-Free Homes

NCT01574560
View directory record Official record
Conditions
Smoking Cessation, Tobacco Cessation
Interventions
Brochure, Counseling
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older · Female only
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 5, 2014 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assess Biomarkers of Tobacco Exposure and Nicotine Pharmacokinetics in Smokers After a 5-Day In-Clinic Confinement Switch to an Electronic Cigarette or Nicotine Gum

NCT02323438
View directory record Official record
Conditions
Smoking
Interventions
Usual Brand Cigarette, Electronic Cigarette #1, Electronic Cigarette #2, Leading U.S. Nicotine Gum
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
153 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Health Effects of SLT, Cigarette Smoking, and New Tobacco Products

NCT00469079
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine gum and lozenge, Taboka, Camel Snus
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Randomized Controlled Trial to Evaluate the Impact of ZYN Nicotine Pouch Products on Cigarette Usage and BoExp in Adult Smokers Over a 12-week Period

NCT06568900
View directory record Official record
Conditions
Tobacco Use
Interventions
cigarette smoking, tobacco flavored and unflavored pouch, unrestricted flavor options pouch
Other
Lead sponsor
Swedish Match AB
Industry
Eligibility
22 Years to 65 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 22, 2024 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD1601: A Study to Evaluate the Exposure to Tar and Nicotine From Two Cigarette Products That Contain a Menthol Capsule in the Filter

NCT04529551
View directory record Official record
Conditions
Smoking, Tobacco Smoking, Tobacco Use
Interventions
1601A, 1601B
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years and older
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 26, 2022 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CSD231005 Nicotine Pouch Biomarkers of Exposure

NCT06303115
View directory record Official record
Conditions
Tobacco Use, Smoking
Interventions
Nicotine Pouch P1312914, 4 mg nicotine, Nicotine Pouch P1312915, 8 mg nicotine, Nicotine Pouch P1013215, 8 mg nicotine, Nicotine Pouch P1013218, 10 mg nicotine, Nicotine Pouch P1012919, 12 mg nicotine, Smoking Abstinence, Continued UB cigarette smoking
Other
Lead sponsor
RAI Services Company
Industry
Eligibility
21 Years to 60 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
5
States / cities
Bentonville, Arkansas • Lexington, Kentucky • Springfield, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MRI and Biological Markers of Acute E-Cigarette Exposure in Smokers and Vapers

NCT05271578
View directory record Official record
Conditions
Vascular Reactivity, Serum Biomarkers
Interventions
Standardized Electronic Research Cigarette, Nicotine Research Cigarette
Device
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 45 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Characterization of Nicotine Exposure and Urge-to-Smoke Following Use of Electronic and Conventional Cigarettes

NCT02210754
View directory record Official record
Conditions
Smoking
Interventions
blu™ Classic Tobacco rechargeable (2.4% nicotine, glycerin vehicle), blu™ Classic Tobacco rechargeable (2.4% nicotine, glycerin/PG vehicle), blu™ Magnificent Menthol rechargeable (2.4% nicotine, glycerin vehicle), blu™ Classic Tobacco rechargeable (1.6% nicotine, glycerin vehicle), blu™ Classic Tobacco rechargeable (1.6% nicotine, glycerin/PG vehicle), Marlboro Cigarette
Other
Lead sponsor
Lorillard Tobacco Company
Industry
Eligibility
21 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 6, 2014 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Isradipine Enhancement of Virtual Reality Cue Exposure for Smoking Cessation

NCT03083353
View directory record Official record
Conditions
Nicotine Dependence, Smoking, Cigarette, Smoking Cessation, Smoking Behaviors, Smoking Reduction, Craving
Interventions
Isradipine, Cue Exposure
Drug · Behavioral
Lead sponsor
Jasper A. Smits
Other
Eligibility
18 Years to 65 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Electronic Cigarette (ECIG) Liquid Vehicles on ECIG Acute Effects

NCT02500615
View directory record Official record
Conditions
Nicotine Exposure, Nicotine Withdrawal Suppression
Interventions
ECIG liquid vehicles
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 55 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low Nicotine Content Cigarettes in Vulnerable Populations: Women of Reproductive Age

NCT04092387
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Varying the nicotine content of cigarettes, E-Cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
21 Years to 44 Years · Female only
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 17, 2025 · Synced Jul 22, 2026, 4:39 AM EDT
Enrolling by invitation No phase listed Observational

Developing Evidence to Inform Regulatory Policy on Nicotine Content in E-Liquids

NCT06619964
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Not listed
Lead sponsor
Rochester Institute of Technology
Other
Eligibility
21 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Project 1, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in Childbearing Age Women

NCT02250534
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 44 Years · Female only
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 Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional

Project 1, Study 1: Investigating the Impact of Nicotine Using Spectrum Cigarettes

NCT01681875
View directory record Official record
Conditions
Tobacco Dependence
Interventions
very low nicotine content cigarettes
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
839 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
9
States / cities
San Francisco, California • Tampa, Florida • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Project 3, Study 2: Extended Exposure to Low Nicotine Content Cigarettes in People With Current Affective Disorders

NCT02232737
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Very low nicotine content cigarettes
Other
Lead sponsor
Brown University
Other
Eligibility
18 Years to 70 Years
Enrollment
775 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
2
States / cities
Providence, Rhode Island • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Dec 6, 2022 · Synced Jul 22, 2026, 4:39 AM EDT
Completed No phase listed Observational

Vitamin C Supplementation to Pregnant Smokers: Follow-up of 2 Randomized Trials Plus Changes in DNA Methylation

NCT03206710
View directory record Official record
Conditions
Asthma, Wheezing, In Utero Nicotine, Pulmonary Function
Interventions
No current intervention
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
6 Months to 11 Years
Enrollment
395 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
2
States / cities
Indianapolis, Indiana • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 20, 2025 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of Nicotine Replacement Therapy in Reducing the Risk of Nicotine Exposure in Pregnant Minority Smokers

NCT00341432
View directory record Official record
Conditions
Smoking, Pregnancy
Interventions
Nicotine Replacement Therapy
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
21 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Impact of E-cigarette Nicotine Concentration on Compensation

NCT05887947
View directory record Official record
Conditions
Smoking Cessation
Interventions
Electronic Cigarette with 5% Nicotine Concentration, Electronic Cigarette with 1.8% Nicotine Concentration
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 9, 2025 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Low Nicotine Content Cigarettes in Vulnerable Populations: Opioid Use Disorder

NCT04092101
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Cigarettes with varying nicotine content, E-Cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
21 Years to 70 Years
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Thirdhand Smoke Contamination in a Neonatal Intensive Care Unit (NICU)

NCT04155697
View directory record Official record
Conditions
Nicotine Exposure
Interventions
2% Chlorohexidine Gluconate soap, 62% ethyl alcohol-based hand sanitizer
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
Not listed
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced Jul 22, 2026, 4:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study to Evaluate Changes in Smokers Using An Oral Tobacco-Derived Nicotine Product

NCT04079933
View directory record Official record
Conditions
Tobacco Use
Interventions
Oral tobacco-derived nicotine product (OTDN)
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
21 Years to 65 Years
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
3
States / cities
Daytona Beach, Florida • Evansville, Indiana • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced Jul 22, 2026, 4:39 AM EDT