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Showing 1–24 of 166 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Nicotine content Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of E-Cigarette Nicotine Content in Smokers (Nicotine Flux Study)

NCT04332926
View directory record Official record
Conditions
Electronic Cigarette Use
Interventions
Tobacco product administration and assessment, own brand cigarettes, Tobacco product administration and assessment, ECIG 30 Watts, 0 mg/ml nicotine, Tobacco product administration and assessment, ECIG 30 Watts, 8 mg/ml nicotine, Tobacco product administration and assessment, ECIG 30 Watts, 15 mg/ml nicotine, Tobacco product administration and assessment, ECIG 30 Watts, 30 mg/ml nicotine
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cigarette and E-cigarette Nicotine Content in an Electronic Tobacco Marketplace (ETM)

NCT05320887
View directory record Official record
Conditions
Tobacco Use
Interventions
Normal Nicotine Content Vape with all flavor e-liquids, Normal nicotine content vape with tobacco e-liquids, Low nicotine content vape with all flavor e-liquids, Low nicotine content vape with tobacco e-liquids
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years and older
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Sep 5, 2026, 1:15 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

A Novel Obesity Prevention Program for High-Risk Infants in Primary Care

NCT06028113
View directory record Official record
Conditions
Obesity, Obesity, Childhood, Weight Gain, Weight Gain Trajectory
Interventions
THRIVE 2.0
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Day and older
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Switching to Reduced Oxidant or Nicotine Content Cigarettes in Smokers

NCT02415270
View directory record Official record
Conditions
Tobacco Smoking Behavior
Interventions
Reduced Nicotine Cigarettes, Reduced ROS/RNS, Control
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 26, 2018 · Synced Sep 5, 2026, 1:15 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Adaptation and Initial Evaluation of Transdiagnostic CBT for Anxious and Depressed Smokers

NCT03920137
View directory record Official record
Conditions
Smoking Cessation
Interventions
UP-ST Therapy, Standard Therapy, Nicotine Patch
Behavioral · Device
Lead sponsor
University of Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Sep 5, 2026, 1:15 PM EDT
Recruiting Not applicable Interventional

Opioids, Low Nicotine Cigarettes, and Chronic Pain

NCT06747871
View directory record Official record
Conditions
Chronic Pain, Tobacco Use, Opioid Substitution Treatment
Interventions
Very Low Nicotine Cigarettes (VLNC), Normal Nicotine Cigarettes (NNC)
Behavioral
Lead sponsor
Duke University
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Sep 5, 2026, 1:15 PM EDT
Not yet recruiting Not applicable Interventional

AI-Enhanced App-based Intervention for Adolescent E-cigarette Cessation

NCT06965296
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes
Interventions
AI-enhanced smartphone app, AI-enhanced smartphone app, but with delayed access
Behavioral
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
14 Years to 20 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tobacco Product Susceptibility and Substitutability by Rurality and Alcohol Use

NCT07010601
View directory record Official record
Conditions
Alcohol Use, E-cigarette Use, Cigarette Use
Interventions
Experimental Tobacco Marketplace, Hypothetical Novel Nicotine Product Purchase Tasks
Behavioral
Lead sponsor
Mark J Rzeszutek, PhD
Other
Eligibility
21 Years and older
Enrollment
737 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Research and Innovation to Stop E-cigarette/Vaping in Young Adults

NCT04974580
View directory record Official record
Conditions
Nicotine Dependence, E-Cig Use
Interventions
Nicotine patch, Phone Counseling, Digital Coaching
Drug · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 24 Years
Enrollment
508 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 28, 2024 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Families, Children and Teachers Thriving Together

NCT04276363
View directory record Official record
Conditions
Child Mental Health
Interventions
Thrive Professional Learning plus ParentCorps, Thrive Professional Learning only, Inspire Professional Learning
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
4 Years to 65 Years
Enrollment
458 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Results available

Impact of Nicotine Messaging on Nicotine Beliefs and Tobacco Use Behavior

NCT04805515
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes
Interventions
Nicotine Corrective Messages
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
794 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Dec 1, 2022 · Synced Sep 5, 2026, 1:15 PM EDT
Active, not recruiting Not applicable Interventional

Smoking Cessation Intervention for Cancer Patients

NCT00575718
View directory record Official record
Conditions
Newly Diagnosed Cancer Patients
Interventions
Hospital Counseling + Nicotine Replacement Therapy. questionaires, Hospital Counseling + Nicotine Replacement + Presurgical Scheduled Reduced Smoking, questionaires
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 9, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Smartphone Based Smoking Cessation Intervention

NCT03740490
View directory record Official record
Conditions
Smoking Cessation
Interventions
Smart-T + NRT, QuitGuide + NRT
Combination Product
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
454 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Impact of Nicotine Reduction on Adolescent Cigarette Use, Alternative Tobacco Use, and Harm From Tobacco

NCT03860077
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes, Uncomplicated
Interventions
Very Low Nicotine Content Cigarettes, Normal Nicotine Content Cigarettes
Drug
Lead sponsor
Brown University
Other
Eligibility
15 Years to 20 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Dec 18, 2023 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional

Study on Sit to Quit Phone Intervention

NCT02840435
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Sit to Quit, Quit for Life
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 12, 2019 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of AAT Training in Smokers

NCT02481752
View directory record Official record
Conditions
Tobacco Use
Interventions
Approach Avoidance Training, SHAM Training
Other
Lead sponsor
Jasper A. Smits
Other
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Reduced Nicotine Content Cigarettes in Smokers of Lower Socioeconomic Status

NCT01928719
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Reduced Nicotine Content Cigarettes, Same Nicotine Content Cigarettes
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Sep 5, 2026, 1:15 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

New Strategies to Enhance Smoking Cessation

NCT06751927
View directory record Official record
Conditions
Smoking Cessation
Interventions
Educational Video
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 75 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 10, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Behavioral Memory Modulation in Nicotine Addiction

NCT03744559
View directory record Official record
Conditions
Nicotine Use Disorder
Interventions
Retrieval Extinction Training (RET), Control Retrieval Extinction Training (RET)
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
25 Years to 65 Years
Enrollment
191 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Phase 4 Interventional Results available

Engagement With an Adaptive Mobile Health Smoking Cessation Intervention

NCT04020718
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Brief telephone advice plus tailored text messages, Mailed nicotine replacement therapy, Proactive telephone coaching
Behavioral · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 9, 2022 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional Results available

Increasing Screening for Cancer Using EHR-Nudges

NCT06177795
View directory record Official record
Conditions
Breast Cancer
Interventions
Post-visit patient text messaging, Default pended order, High risk bidirectional post-visit text messaging
Behavioral
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
40 Years to 74 Years · Female only
Enrollment
21,123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Cleveland, Ohio • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Switching to Very Low Nicotine Content Cigarettes vs Reducing Cigarettes Per Day

NCT03060083
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Very low nicotine content (VLNC) cigarettes and nicotine replacement therapy (NRT), Reduce cigarettes per day (CPD) with nicotine replacement therapy (NRT)
Other
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Oct 3, 2022 · Synced Sep 5, 2026, 1:15 PM EDT
Recruiting Not applicable Interventional

THRIVE-CAR-T Digital App

NCT06665295
View directory record Official record
Conditions
CAR T-Cell Therapy
Interventions
THRIVE-CAR-T
Behavioral
Lead sponsor
Patrick C. Johnson, MD
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Sep 5, 2026, 1:15 PM EDT
Completed Not applicable Interventional

Counseling to Reduce Children's SHS Exposure: A Trial With Maternal Smokers

NCT02117947
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Behavioral Counseling, Self-help control
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 14, 2017 · Synced Sep 5, 2026, 1:15 PM EDT