TOBACCO USE

This trial tests whether a counseling method called motivational interviewing, based on the Transtheoretical Model, can help nursing students who smoke to change their smoking habits and quit. Participants will receive two to six face-to-face sessions tailored to their readiness …

This trial tests whether a text message-based program called Text2Quit-Kenya can help current tobacco users who visit the emergency department at Kenyatta National Hospital in Kenya quit smoking. Participants receive automated, interactive texts timed around their quit date to tr…

This study in Nairobi, Kenya, will test whether a drug called cytisine, combined with counseling, can help 300 people with HIV quit smoking and reduce heavy drinking. Participants will receive either cytisine or a placebo, plus either intensive counseling or standard advice. The …

This trial tests whether integrating tobacco cessation tools into electronic health records can increase the number of smokers who receive a prescription for nicotine replacement therapy (NRT) like patches or gum. Researchers will compare a new workflow at one primary care clinic…

This study tests whether a 6-month program delivered through the Telegram messaging app can help people stop smoking after a heart attack. 142 adult smokers who use Telegram will either get the chatbot support or standard advice. The goal is to see if more people quit with the ch…

This pilot trial tests whether a brief, culturally adapted support message sent to a smartphone during moments of high stress can reduce the urge to smoke, vape, or eat in response to stress. About 115 gender and sexual minority adults in Dhaka will receive up to five check-ins p…

This study tests a mindfulness program designed to help sexual assault survivors reduce alcohol misuse and tobacco use. Researchers will enroll 120 college students aged 18-24 who have experienced sexual violence and drank alcohol recently. Participants will take online surveys a…

This trial asks how different e-cigarette products compare to regular cigarettes in terms of nicotine delivery and appeal. About 50 adult smokers who also use e-cigarettes will try eight different products in a random order during a supervised stay. The study measures nicotine le…

This study looks at whether four new oral nicotine products (like pouches) are less appealing and addictive than traditional cigarettes and moist snuff. About 50 healthy adults who smoke and use smokeless tobacco will try each product in a clinic setting. Researchers will measure…

This study looks at how changing the temperature and liquid in e-cigarettes affects the amount of harmful chemicals (oxidants) users breathe in. Researchers will measure markers of cell damage in breath, cheek cells, and blood from 50 adult e-cigarette users. The goal is to under…

This study will check how addictive two new nicotine pouches are by measuring their effects on the body and how much nicotine gets into the blood. About 40 healthy adults who smoke and also use smokeless tobacco will try the pouches in a clinic. The goal is to understand the abus…

This study will enroll 70 adult smokers to compare how appealing and addictive different e-cigarettes are versus their usual cigarettes and nicotine gum. Participants will try each product in a random order during an 8-day stay at a clinic. Researchers will measure how much nicot…

This study will measure how much nicotine enters the bloodstream when adult smokers use eight different e-cigarette products with various flavors (menthol, mint, tobacco, fruit). Forty healthy smokers, aged 21 to 60, will try each product in a random order while staying at a clin…

This study will enroll 40 healthy adult smokers to compare how much they crave different tobacco products. Participants will try heated tobacco devices, their usual cigarettes, and nicotine gum in a clinic setting. Researchers will measure their desire to smoke and nicotine level…

This study tests whether community health workers can help more eligible people get screened for lung cancer and quit smoking. The workers will reach out to patients, help them make informed decisions, offer smoking cessation counseling, and navigate barriers to care. The study w…