Clinical trials
Tobacco clinical trials
Below are recruiting tobacco clinical trials, each written for real people, not researchers. We’re tracking 188 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06932276Recruiting
Smoke-free homes study for families with kids
This study tests a program to help families make their homes smoke-free, especially when there are children and smokers living together. It aims to reduce secondhand smoke exposure for kids.
Barcelona, CataloniaAges 18 years+ - NCT06787937Recruiting
Study on reducing nicotine in cigarettes
This study tests cigarettes that have less nicotine to see how people react to them. You may be able to join if you are a regular adult smoker interested in trying reduced-nicotine cigarettes.
Atlanta, GeorgiaAges 21 years+ - NCT06451081Recruiting
Helping Hong Kong smokers quit with a text-based program
This study tests a new program that uses text messages to help people who smoke daily to quit. It is designed for Hong Kong residents who can read Chinese and own a smartphone.
Hong KongAges 18 years+ - NCT06310187Recruiting
Little cigar study for daily cigarette smokers
This study looks at how certain chemicals from little cigars affect the body. It may help researchers understand health risks. You must be a daily cigarette smoker who has never smoked little cigars.
Hershey, PennsylvaniaAges 21–65 - NCT05896033Recruiting
Study how menthol cigarette rules affect current menthol smokers
This study looks at how changes in menthol cigarette and e-cigarette rules may affect people who currently smoke menthol cigarettes. You may be asked to complete phone-based reports (like a diary) about your smoking patterns.
Charleston, South CarolinaAges 21 years+ - NCT05746442Recruiting
Interactive quitting messages for Khmer-speaking people with HIV
This trial tests whether interactive, personalized messages can help people who smoke cigarettes quit. It is designed for Khmer-speaking adults living with HIV and aims to support a quit attempt within about two weeks.
Phnom PenhAges 18 years+ - NCT05836103Recruiting
Texting on your phone to help you quit smoking
This trial tests whether smartphone texting messages can help young adults stop smoking. If you’re planning to quit soon, the messages may support you during the quitting process.
Baltimore, MarylandAges 18–30 - NCT05572671Recruiting
Study brain scans to predict near-term smoking relapse risk
This study uses MRI brain scans and smoking measurements to understand what may predict when someone is about to smoke again. If you qualify, you’ll be asked to avoid nicotine for 12 hours before a lab visit and complete MRI safety screening.
University Park, PennsylvaniaAges 21–65 - NCT05337722Recruiting
Phone app with peer support to help pregnant people quit smoking
This trial tests a smartphone app that aims to help pregnant people stop smoking, using support from peers (other people going through it). If you smoke regularly and can use an Android phone, the app may provide helpful quitting guidance and encouragement.
Cluj-Napoca, ClujAges 18 years+ - NCT05555069Recruiting
Menthol-flavored vaping study for adult menthol cigarette smokers
This study looks at how menthol flavoring may affect whether adult menthol cigarette smokers switch to e-cigarettes. You may be asked to switch and use e-cigarettes over a set period, while researchers track your smoking behavior.
Kansas City, MissouriAges 21 years+ - NCT05380765Recruiting
Help for First Nation teens to prevent substance use
This trial tests a positive, prevention-focused approach to help North American Indian (First Nation) teens make healthier choices about substance use. It involves both teens and an adult family member who supports good decision-making.
Kingston, Rhode IslandAges 10–14 - NCT05627674Enrolling by invitation
Help improve lung cancer screening and quitting support uptake
This study tests a “precision” approach to help people who are newly eligible for lung cancer screening actually get screened and start smoking-cessation treatment. If it works, it could make screening and quitting help easier to access and more engaging.
St Louis, MissouriAges 18 years+ - NCT05233228RecruitingPhase 2
Phone-based coaching to help you quit smoking in Laos
This study tests a mobile phone program that gives personalized help to support quitting smoking. If you’re eligible, it may help you plan a quit date and stick with quitting using the app.
ChampasakAges 18–65 - NCT05121051RecruitingPhase 2
Broccoli sprout extract to reduce tobacco cancer-causing chemicals
This Phase 2 study tests whether broccoli sprout extract (Avmacol ES) can reduce cancer-causing substances linked to heavy smoking. It’s for adults who smoke heavily and may help lower harmful tobacco-related chemical effects in the body.
Tucson, ArizonaAges 18 years+ - NCT04604509RecruitingPhase 4
Smoking quit plan using counseling and nicotine-free medicines
This trial tests whether a quit program that combines counseling with medicines (nicotine replacement, varenicline, or bupropion) helps people stop or cut down smoking. It’s also delivered through telehealth, with repeated check-ins to see how well the plan works and whether it’s safe for you.
Houston, TexasAges 18 years+ - NCT05415761Recruiting
Mobile phone support to help you quit smoking in clinic
This study tests different texting/app-based ways to help people quit smoking, especially those who may have less access to care. You may be assigned to one approach and get support through your phone.
Gainesville, FloridaAges 21 years+ - NCT06395415Recruiting
Mobile health program for young adult e-cigarette users
This study tests a mobile health program to help young adults ages 18–26 who use e-cigarettes regularly to reduce or quit. It uses text messages to support you, and you'll need to be interested in changing your vaping habits.
Chicago, IllinoisAges 18–26 - NCT07129265Enrolling by invitation
Understanding vape marketing study for youth
This study looks at how young people understand vape marketing. You might join a working group or a focus group to share your thoughts.
Boston, MassachusettsAges 13 years+ - NCT06444971Recruiting
Muscle relaxation for better lung function in smokers
This study tests a simple muscle relaxation technique to see if it improves how well your lungs work and how easily you breathe. If you are a smoker, this may help you understand more about your lung health.
Rawalpindi, Punjab ProvinceAges 18–60 - NCT07199517Recruiting
Helping smokers who aren't ready to quit
This study tests whether switching to a less harmful nicotine product (like a nicotine pouch or e-cigarette) can help people who are not ready to quit smoking reduce their health risks. You would be given a sample of a harm reduction product to try, and researchers will check how it affects your smoking habits.
Philadelphia, PennsylvaniaAges 21 years+ - NCT07592793Enrolling by invitation
Community Health Worker Perspectives on New Programs
This study asks community health center workers and partner staff about their experiences implementing a new health program. Your feedback helps researchers understand what works and what challenges exist in delivering care in community settings.
Boston, MassachusettsAges 18 years+ - NCT07585006RecruitingPhase 1
How nicotine affects the body: comparing e-cigarette liquids
This study compares different nicotine products to understand how they affect your body. Researchers will measure your heart rate, breathing, and blood samples during three short lab visits. The results may help scientists better understand nicotine's effects.
Columbus, OhioAges 21 years+ - NCT06630728RecruitingPhase 4
How Addictive Are Very Low Nicotine Little Cigars?
This study is testing whether little cigars with very low nicotine are less addictive than regular ones. Researchers want to see how smoking these affects your mood, cravings, and smoking behavior.
Columbus, OhioAges 21–75 - NCT06264154Recruiting
Can e-cigarette flavor help you quit smoking?
This study looks at whether the flavor of an e-cigarette can help people who keep smoking switch completely away from regular cigarettes. Participants will use e-cigarettes with different flavors for 6 weeks.
Philadelphia, PennsylvaniaAges 21 years+
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Common questions
- Are there clinical trials for tobacco?
- Yes. Clin2 currently lists 188 recruiting tobacco studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a tobacco trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a tobacco trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.