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Showing 1–24 of 46 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: low dose Nicotine Clear all
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on E-Cigarette Use Behavior

NCT06609109
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Electronic Cigarette Use
Interventions
THC High Dose, THC Low Dose, THC 0mg, E-Cigarette Full Nicotine, E-Cigarette Placebo Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 2, 2026, 10:41 PM 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 2, 2026, 10:41 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Reward Sensitivity and Pharmacotherapy for Smoking Cessation

NCT02162849
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Varenicline, Nicotine Patch, Placebo Patch, Placebo Tablet, Questionnaires, Counseling Sessions, Lab Session, Saliva Test
Drug · Behavioral · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years to 75 Years
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 2, 2026, 10:41 PM 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 2, 2026, 10:41 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on Cigarette Use Behavior

NCT06609083
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Cigarette Smoking
Interventions
THC 30mg, THC 5mg, THC 0mg, Cigarette Full Nicotine, Cigarette Reduced Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 2, 2026, 10:41 PM 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 2, 2026, 10:41 PM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Pioglitazone for Heroin and for Nicotine Dependence

NCT01395797
View directory record Official record
Conditions
Heroin Dependence, Nicotine Dependence
Interventions
PIO, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 55 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 12, 2017 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Metformin During Nicotine Withdrawal

NCT03593538
View directory record Official record
Conditions
Smoking, HIV-1-infection
Interventions
Metformin, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 25, 2021 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Behavioral Intervention for Low Income Depressed Smokers in Drug Treatment

NCT01372254
View directory record Official record
Conditions
Cigarette Smoking, Drug Use
Interventions
Standard Treatment, BAD-AS, Transdermal Nicotine Patch
Behavioral · Drug
Lead sponsor
University of Maryland, College Park
Other
Eligibility
18 Years to 65 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low-Dose Galantamine to Potentiate the Attention-Enhancing Effects of Low-Dose Nicotine

NCT02420327
View directory record Official record
Conditions
Basic Science Study of the Mechanisms of Attentional Enhancement by Compounds Acting on the Nicotinic Receptor
Interventions
Placebo patch & placebo capsule, Placebo patch & galantamine capsule, Nicotine patch & placebo capsule, Nicotine patch and galantamine capsule
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
21 Years to 55 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 3, 2019 · Synced Sep 2, 2026, 10:41 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Smoking Cessation Intervention During Low Dose CT (LDCT) Screening for Lung Cancer

NCT03059940
View directory record Official record
Conditions
Smoking Cessation
Interventions
Questionnaires, Low Dose Computed Tomography Scan, Shared Decision Making + Video, Cessation Counseling, Quitline, Pharmacotherapy Discussion, Nicotine Patch, Anti-Smoking Drug, Tobacco Treatment Program, Carbon Monoxide (CO) Level Test
Behavioral · Procedure · Other + 1 more
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
50 Years and older
Enrollment
630 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Flavors and E-cigarette Effects in Adolescent Smokers- STUDY 1

NCT02179034
View directory record Official record
Conditions
Nicotine Dependence, Other Tobacco Product
Interventions
Nicotine, Low Dose Menthol, High Dose Menthol
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 20 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 3, 2020 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Patch and Bupropion to Reduce Smoking Rates in Younger, Low-Income, and Minority Individuals

NCT00308763
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine Patch, Sustained Release Bupropion
Drug
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years to 45 Years
Enrollment
594 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 20, 2014 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Nicotine Treatment of Cognitive Decline in Down Syndrome

NCT01778946
View directory record Official record
Conditions
Down Syndrome, Mild Cognitive Impairment
Interventions
Low Dose Nicotine (7mg), Moderate Dose Nicotine (14mg)
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
25 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 9, 2022 · Synced Sep 2, 2026, 10:41 PM EDT
Active, not recruiting 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
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 2, 2026, 10:41 PM 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 2, 2026, 10:41 PM EDT
Terminated Phase 2 Interventional Results available

The Purpose of This Study is to Determine if Tetrodotoxin (TTX) is Effective in the Treatment of Pain Resulting From Chemotherapy Treatment

NCT01655823
View directory record Official record
Conditions
Pain, Peripheral Neuropathy, Neuropathic Pain
Interventions
Placebo, Tetrodotoxin
Drug
Lead sponsor
Wex Pharmaceuticals Inc.
Industry
Eligibility
18 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
23
States / cities
Fountain Valley, California • Laguna Hills, California • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Sep 2, 2026, 10:41 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Implementing Tobacco Treatment in Low Dose CT Lung Cancer Screening Sites

NCT03315910
View directory record Official record
Conditions
Smoking Cessation
Interventions
Motivational Interviewing (MI), Nicotine Replacement Therapy (NRT), Nicotine Lozenge, Message Framing, saliva sample
Behavioral · Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
50 Years to 80 Years
Enrollment
807 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
18
States / cities
Los Angeles, California • Walnut Creek, California • La Grange, Georgia + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Not applicable Interventional Results available

Treating Low-Income Smokers in the Hospital Emergency Department

NCT01328431
View directory record Official record
Conditions
Tobacco Use Cessation, Smoking Cessation, Smoking, Tobacco Use Disorder
Interventions
Brief Intervention with NRT Initiation
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
780 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 3, 2014 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Phase 4 Interventional Results available

Novel Pharmacotherapy Approaches in Smokers With Serious Mental Illness

NCT04011280
View directory record Official record
Conditions
Bipolar Disorder, Schizophrenia, Schizoaffective Disorder, Nicotine Dependence
Interventions
Varenicline
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 70 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 21, 2023 · Synced Sep 2, 2026, 10:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Facilitating Smoking Cessation With Reduced Nicotine Cigarettes

NCT02796391
View directory record Official record
Conditions
Smoking Cessation
Interventions
Very Low Nicotine Content (VLNC) Cigarettes, One on One Counseling
Drug · Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
163 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Nov 13, 2022 · Synced Sep 2, 2026, 10:41 PM EDT
Terminated Phase 1Phase 2 Interventional

Safety and Preliminary Efficacy Study of Nicotine Gel to Treat Diabetic Foot Ulcers

NCT00316537
View directory record Official record
Conditions
Diabetic Foot Ulcers
Interventions
ATG002 (study drug)
Drug
Lead sponsor
CoMentis
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
13
States / cities
Homewood, Alabama • Phoenix, Arizona • Tucson, Arizona + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2007 · Synced Sep 2, 2026, 10:41 PM 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 2, 2026, 10:41 PM EDT
Completed Not applicable Interventional Results available

Smoking Treatment and Exercise Program for Underserved Populations (STEP UP)

NCT02873754
View directory record Official record
Conditions
Smoking
Interventions
Cognitive Behavioral Counseling, Mobile Contingency Management, Bupropion, Transdermal nicotine patch, Nicotine polacrilex, Nicotine lozenge
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 12, 2018 · Synced Sep 2, 2026, 10:41 PM EDT