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Showing 1–19 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Nicotine metabolism Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Mechanisms of the Nicotine Metabolism Effect on Tobacco Dependence

NCT01627392
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Smoking abstinence
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 70 Years
Enrollment
305 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2015 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Phase 2Phase 3 Interventional Results available

PRecision Interventions for SMoking in the SCCS

NCT03521141
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Nicotine patch, Varenicline, Nicotine metabolism, Genetically-informed lung cancer risk score, NCI "Clearing the Air"
Drug · Genetic · Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 31, 2020 · Synced Sep 22, 2026, 7:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Metabolism of NNK in Japanese Americans

NCT04228952
View directory record Official record
Conditions
Smoking
Interventions
Modified Natural American Spirit-Tan or Green cigarettes injected with labeled NNK
Combination Product
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
21 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced Sep 22, 2026, 7:57 PM EDT
Active, not recruiting No phase listed Observational

Using Secondary Data to Evaluate Sex-based Heterogeneity of GLP-1 Agonists and SGLT2 Inhibitors on Cardiovascular-Kidney-Metabolic Health (CKMH) Outcomes in Real-world Settings (DASH-CKMH)

NCT07188545
View directory record Official record
Conditions
Cardiovascular Kidney Metabolic Syndrome
Interventions
Intervention, Active Comparator
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
23,280,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Assessment of High Dose Transdermal Nicotine for Fast Metabolizers of Nicotine

NCT00956943
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Nicoderm CQ transdermal nicotine, placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 45 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 14, 2014 · Synced Sep 22, 2026, 7:57 PM EDT
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 Sep 22, 2026, 7:57 PM EDT
Recruiting Not applicable Interventional

Metabolism-Informed Care to Aid Alaska Native People to Quit Smoking (QUIT)

NCT06556238
View directory record Official record
Conditions
Smoking Cessation
Interventions
Nicotine Metabolite Ratio
Other
Lead sponsor
Southcentral Foundation
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 22, 2026, 7:57 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Nicotinic Hepatic Metabolism on Neuroreceptor Substrates of Nicotine Addiction

NCT03442413
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
2-[18F]-FA PET/CT, I.V. Nicotine
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Metabolism and Little Cigars

NCT01898559
View directory record Official record
Conditions
Smoking
Interventions
Switch to smoking only little cigars
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years to 65 Years
Enrollment
197 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 5, 2017 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Phase 3 Interventional Results available

Metabolism Informed Smoking Treatment: The MIST RCT

NCT04590404
View directory record Official record
Conditions
Smoking
Interventions
Post-discharge automated phone calls (IVR) with option to connect with a tobacco coach., Nicotine Replacement Therapy, Varenicline, Metabolism Informed Smoking Treatment (Nicotine metabolite ratio (NMR)-based selection of pharmacotherapy)
Behavioral · Drug · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older
Enrollment
606 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Prolonged Sitting on Responses to Short-Term Exercise Training

NCT03352063
View directory record Official record
Conditions
Atherosclerosis, Metabolic Syndrome
Interventions
Prolonged sitting with exercise, Active walking with exercise.
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 35 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 29, 2021 · Synced Sep 22, 2026, 7:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Examining a New Biomarker of Nicotine Use Among Pregnant Women Who Participated in the New England SCRIPT

NCT00519766
View directory record Official record
Conditions
Smoking, Tobacco Use Disorder
Interventions
Not listed
Lead sponsor
Memorial Hospital of Rhode Island
Other
Eligibility
Female only
Enrollment
252 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2002
U.S. locations
1
States / cities
Pawtucket, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 22, 2014 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Phase 1 Interventional

Metabolism of Nicotine and Cotinine in Pregnant African-American Women

NCT00341640
View directory record Official record
Conditions
Pregnancy, Smokers
Interventions
Blood testing
Procedure
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 30 Years · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 22, 2026, 7:57 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Effects of GLP-1 RAs on Human Lactation Outcomes

NCT07720414
View directory record Official record
Conditions
Lactation, Weight Loss
Interventions
Injected GLP-1 Receptor Agonists and Dual Agonists
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
Female only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 22, 2026, 7:57 PM EDT
Not yet recruiting No phase listed Observational

GLP-1 Medication & Behavioral Health Programs on Weight & Metabolic Outcomes: FLOURISH and THRIVE Prospective Cohort Study

NCT07588984
View directory record Official record
Conditions
Obesity & Overweight, Weight Loss, Preventative Health, Body Weight, Cardiovascular Disease Risk Factor
Interventions
Noom Weight, Free Tier, Education-only control, Semaglutide, Tirzepatide, Microdose semaglutide, Microdose tirzepatide
Behavioral · Drug
Lead sponsor
Noom Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
2,310 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotine Metabolism and Low Nicotine Cigarettes

NCT01898507
View directory record Official record
Conditions
Smoking
Interventions
Low nicotine cigarettes
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years to 65 Years
Enrollment
207 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 17, 2018 · Synced Sep 22, 2026, 7:57 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effect of Resistance Training on Tobacco-Related Cardiovascular Disease Risk

NCT01705951
View directory record Official record
Conditions
Smoking, Cardiovascular Disease Risk
Interventions
Resistance Training (RT), Nicotine Replacement Therapy (NRT)
Other · Biological
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 35 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 11, 2012 · Synced Sep 22, 2026, 7:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacogenetics of Nicotine Metabolism in African-Americans

NCT00879918
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Deuterated nicotine and cotinine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 23, 2013 · Synced Sep 22, 2026, 7:57 PM EDT
Recruiting Not applicable Interventional

Impact of Early Fortini Initiation on Growth and Interstage Outcomes in Infants With Single Ventricle Physiology

NCT07087782
View directory record Official record
Conditions
Single-ventricle
Interventions
Fortini formula, Standard Nutritional Care
Other
Lead sponsor
Driscoll Children's Hospital
Other
Eligibility
0 Months to 6 Months
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Corpus Christi, Texas
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 22, 2026, 7:57 PM EDT