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Showing 25–42 of 18 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: high dose Nicotine Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Controlled Study of the Ability of a Smokefree Tobacco Product to Increase the Quit Rate Among Cigarette Smokers

NCT00843622
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Low-nitrosamine smokefree tobacco product for oral use, Non-tobacco, non-nicotine placebo product
Drug · Other
Lead sponsor
Swedish Match AB
Industry
Eligibility
25 Years to 65 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
4
States / cities
Daytona Beach, Florida • Evansville, Indiana • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 16, 2014 · Synced Sep 26, 2026, 2:29 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Effects of Progesterone on IV Nicotine Induced Changes on BOLD fMRI Signal, Hormones and Subjective Ratings of Stimulant Drugs

NCT01589068
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Intravenous Nicotine, Progesterone
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 40 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2015
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 16, 2024 · Synced Sep 26, 2026, 2:29 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Product Characteristics on the Abuse Liability of Nicotine Pouches

NCT07165808
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Nicotine pouch: Low dose, Nicotine pouch: High dose, Low pH, High pH
Other
Lead sponsor
Emory University
Other
Eligibility
21 Years to 35 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 26, 2026, 2:29 AM EDT
Not yet recruiting Phase 2 Interventional

DOSE-UP: Dose Optimization for Smoking and E-Cigarette Use Pharmacotherapy

NCT07754578
View directory record Official record
Conditions
Dual Use of Cigarettes and E-cigarettes
Interventions
Text- and web-based support, Nicotine Replacement Therapy (NRT, nicotine patch), Nicotine replacement therapy lozenge
Behavioral · Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
321 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 26, 2026, 2:29 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Effects of Progesterone on Smoked Nicotine Induced Changes in Hormones and Subjective Ratings of Stimulant Drug Effects

NCT01636336
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine, Progesterone
Other
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2016
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 14, 2013 · Synced Sep 26, 2026, 2:29 AM EDT
Completed Phase 4 Interventional Results available

The END Perioperative Smoking Pilot Study

NCT02482233
View directory record Official record
Conditions
Smoking, Nicotine Addiction, Surgery
Interventions
ENDD (NJOY), NRT (NicoDerm CQ), telephone counseling, brief advice, brochure
Behavioral · Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Sep 26, 2026, 2:29 AM EDT
Completed Phase 3 Interventional Results available

Concurrent Bupropion / Varenicline for Smoking Cessation

NCT01303861
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Varenicline, Bupropion, Nicotine patches, Nicotine Inhaler
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
702 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
4
States / cities
Charlotte, North Carolina • Durham, North Carolina • Raleigh, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2014 · Synced Sep 26, 2026, 2:29 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Nicotine Delivery Systems: Research & Treatment

NCT00108342
View directory record Official record
Conditions
Smoking
Interventions
Nicotine gum - 2 mg and 4 mg, Nicotine lozenges - 2 mg and 4 mg, Nicotine inhaler (4 mg yield) - low and high "dosage" by frequency of puffing, Computer learning
Drug · Other
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
21 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
West Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Sep 26, 2026, 2:29 AM EDT
Terminated Phase 4 Interventional

Nicotine Patch for Nicotine Dependence in Individuals With Schizophrenia or Schizoaffective Disorder - 1

NCT00046813
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine patch
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
2
States / cities
Piscataway, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 26, 2026, 2:29 AM EDT
Recruiting Phase 4 Interventional

Nicotine Replacement Therapy, Counseling, Varenicline, and Bupropion for Smoking Cessation, the PISCES I Trial

NCT04604509
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma
Interventions
Bupropion Hydrochloride Controlled-release, Nicotine Replacement, Questionnaire Administration, Tobacco Cessation Counseling, Varenicline
Drug · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
2,010 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 26, 2026, 2:29 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Understanding the Clinical Pharmacology of Marijuana-Tobacco Co-administration

NCT05999383
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Sep 26, 2026, 2:29 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Evaluation of Low and High Nicotine Tobacco Free Nicotine Pouches

NCT06678789
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Dependence, Smoking Cessation
Interventions
High Nicotine Dose, Low Nicotine Dose
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 26, 2026, 2:29 AM EDT
Completed Phase 1 Interventional

Targeting Orexin to Treat Nicotine Dependence

NCT03999099
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Suvorexant 20 mg, Suvorexant 10 mg, Placebo oral tablet
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 20, 2026 · Synced Sep 26, 2026, 2:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Flavors and E-cigarette Effects in Adolescent Smokers- STUDY 2

NCT03168191
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine, Experimental Flavor, Menthol Flavor
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 20 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 3, 2020 · Synced Sep 26, 2026, 2:29 AM EDT
Active, not recruiting Not applicable Interventional

The Precision CAD Trial

NCT04755413
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Medical/Behavioral therapy, Standard of Care, Registry
Other
Lead sponsor
Emory University
Other
Eligibility
21 Years to 90 Years
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
5
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Sep 26, 2026, 2:29 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Smoked Nicotine Induced Changes in Hormone Function, Mood States and Behaviors

NCT01636323
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicotine
Other
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2016
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 14, 2013 · Synced Sep 26, 2026, 2:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Combining Modafinil and Nicotine Replacement Therapy in Treating Nicotine Dependent Adolescents

NCT00258479
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
ModafinilNicotine Replacement Therapy, Modafinil
Drug
Lead sponsor
Catherine Martin, MD
Other
Eligibility
16 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2011
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated May 10, 2017 · Synced Sep 26, 2026, 2:29 AM EDT
Completed Phase 2 Interventional Results available

A Study of the Effectiveness and Safety of Different Doses of Fluticasone Propionate Taken From a Dry Powder Inhaler (Puffer) in Adolescents and Adults Who Have Asthma That is Not Controlled by High Dose Inhaled Corticosteroid Asthma Medications

NCT01576718
View directory record Official record
Conditions
Asthma
Interventions
Fp MDPI, Placebo MDPI, Flovent Diskus, albuterol/salbutamol
Drug · Other
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
12 Years and older
Enrollment
889 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
148
States / cities
Birmingham, Alabama • Homewood, Alabama • Goodyear, Arizona + 114 more
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Sep 26, 2026, 2:29 AM EDT