Clinical trials
Nicotine clinical trials
Below are recruiting nicotine clinical trials, each written for real people, not researchers. We’re tracking 143 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07487818RecruitingPhase 2/Phase 3
Vagus nerve stimulation with nicotine patch for quitting smoking
This study tests if a gentle electrical stimulation of a nerve in your neck can help you quit smoking when used with nicotine replacement therapy (patches or gum). It might offer a new way to reduce cravings and withdrawal.
Rochester, MinnesotaAges 18 years+ - NCT06619964Enrolling by invitation
Study on nicotine levels in e-liquids
This trial tests how different nicotine levels in e-liquids affect people who use pod or pen-style vapes daily. It aims to help regulators make better rules about nicotine content.
Rochester, New YorkAges 21 years+ - NCT03249428Enrolling by invitation
Cytisine vs nicotine patches for quitting smoking
This study compares cytisine (an aid to reduce cravings) with nicotine replacement therapy (like patches or gum) to help people quit tobacco/nicotine. It also looks at whether the two options work for people facing higher barriers like low income or housing insecurity.
Ottawa, OntarioAges 18 years+ - NCT05628389Recruiting
Phone-based help to quit smoking or waterpipe
This study offers phone support to help people quit smoking cigarettes and/or waterpipe. It may help you build a quit plan and get regular encouragement and coaching from a distance.
BeirutAges 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+ - NCT06232447Recruiting
Menthol smoking and inflammation study
This study looks at how menthol cigarettes affect inflammation and smoking habits. It uses a smartphone app to track your experiences and may help find better ways to help people quit.
North Chicago, IllinoisAges 21–85 - NCT06249984Recruiting
Moist snuff study: effects of tobacco type and nicotine
This study looks at how the type of tobacco and nicotine in moist snuff affect how addictive it might be. Researchers will test different snuff products to understand their appeal and risk, which could help create safer options for people who use smokeless tobacco.
Columbus, OhioAges 21 years+ - NCT06127589Recruiting
Quit for Kids: help parents quit smoking and protect children
This study offers a program to help parents who smoke quit for good, while protecting their young children from secondhand smoke. It uses text messaging and support to make quitting easier.
Hong KongAges 18 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+ - NCT05815199Recruiting
E-cigarettes to help smokers with serious mental illness cut down
This study tests whether e-cigarettes can help people who smoke a lot reduce cigarette use (without requiring them to quit completely). It is designed for adults with serious mental illness and focuses on harm reduction and follow-up over time.
New York, New YorkAges 21 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 - 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 - NCT03294460RecruitingPhase 1
Genetic study of smoking and alcohol response in healthy adults
This Phase 1 study tests whether certain genes linked to nicotine receptors affect how people feel and respond to alcohol. It also compares alcohol responses in smokers versus non-smokers using brain imaging (MRI) and alcohol-earning/reward tasks, aiming to better understand why some people may crave alcohol more than others.
Bethesda, MarylandAges 21–60 - 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+ - NCT06474299RecruitingPhase 4
Quit Smoking and Vaping With Patches and Pills
This study tests whether a combination of a nicotine patch plus a medication called varenicline can help people who both smoke and vape quit both. You'll get free medication and support to help you stop.
Madison, WisconsinAges 21 years+ - NCT06260683Recruiting
Comparing tobacco vs. non-tobacco flavored e-cigarettes for quitting smoking
This study tests whether using e-cigarettes with a tobacco flavor or a non-tobacco flavor helps people who smoke switch away from regular cigarettes. Participants will use either e-cigarettes or nicotine replacement therapy for a period of time, and researchers will track their smoking behavior.
Columbus, OhioAges 21 years+ - NCT05790486Recruiting
Take a Break program for adult smokers in rural areas
This trial tests a text-based program to help adults who smoke but are not ready to quit yet. It may help you think about quitting when you’re ready, without pushing you to stop right away.
Winston-Salem, North CarolinaAges 18 years+ - NCT07132814Recruiting
Testing abuse potential of five oral nicotine products
This study tests how much people might want to use five different types of modern oral nicotine products (like pouches or lozenges) compared to smoking their usual cigarette. It helps researchers understand if these products could be less addictive than cigarettes.
Overland Park, KansasAges 21–60 - NCT07014124Recruiting
Helping smoking fathers quit for their sick child
This study tests whether helping smoking fathers quit can improve their child's health. You and your child will get support through a messaging app, and the child will provide saliva samples.
Hong Kong, PokfulamAges 18 years+ - NCT06932718Recruiting
Smoking cessation program for Hong Kong workers
This study tests a workplace program to help people in Hong Kong quit smoking. It includes support through instant messaging and check-ins over 12 months.
Hong KongAges 18 years+ - NCT06662305RecruitingPhase 2
KickNic! App to Help Teens Quit Vaping
This study tests a new smartphone app called KickNic! to help teens quit vaping. If you're a regular vaper aged 12-19 and want to stop, the app might give you the support you need.
New Haven, ConnecticutAges 12–19 - NCT06556238Recruiting
Smoking cessation trial for Alaska Native people
This study tests a personalized approach to help Alaska Native and American Indian people quit smoking. You will get treatment based on a blood test, and the study will see if this approach works better than standard care.
Anchorage, AlaskaAges 18 years+ - NCT06448351Recruiting
Changing nicotine in e-cigarettes to reduce harm
This study tests how changing the amount of nicotine in e-cigarettes affects people's behavior. It looks at two groups: young adults who already vape and older adult smokers who want to try vaping, to see if different nicotine levels can help reduce smoking or make vaping safer.
Columbus, OhioAges 21–65 - NCT06290869RecruitingPhase 3
Tobacco education and lung scan study
This study tests whether a special health education program, along with a free lung scan, can help long-term smokers quit. You may be able to join if you are a current smoker between 50 and 80 years old and have never had lung cancer.
Washington D.C., District of ColumbiaAges 50–80
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Common questions
- Are there clinical trials for nicotine?
- Yes. Clin2 currently lists 143 recruiting nicotine 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 nicotine 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 nicotine 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.