TOBACCO USE DISORDER

This study tests whether psilocybin, a psychedelic substance, can help people stop smoking. Sixty-six daily smokers who have tried and failed to quit before will receive either psilocybin or niacin (a vitamin) in two sessions one week apart. Researchers will check if participants…

This study tests a program that sends personalized text messages and provides nicotine patches to help people with HIV in Cambodia stop smoking. Researchers will enroll 800 smokers and check if they quit after 6 months using self-reports and breath tests. The goal is to find a pr…

This study is testing whether giving rural smokers a two-week supply of nicotine patches or lozenges can help them quit. Researchers are recruiting 272 adults from rural areas across the U.S. who smoke at least 5 cigarettes daily. The main goal is to see how many people stop usin…

This study tests a program that combines community health worker visits with a smartphone app to help low-income women stop smoking. About 344 women in Brazil will either get the app plus health worker support or just a referral to a standard quit-smoking clinic. The goal is to s…

This study tests whether a common stop-smoking medication (varenicline) plus financial incentives can help adults aged 18-40 who use both e-cigarettes and cannabis quit vaping. All 105 participants will receive the drug and rewards for 12 weeks. Researchers will also track how ca…

This study is testing whether e-cigarettes or nicotine replacement therapy (patches and lozenges) can help obese smokers quit or reduce smoking. Sixty participants will use one of the two products for 8 weeks, and researchers will track how many cigarettes they smoke, their carbo…

This study tests a program that combines brief advice, nicotine replacement therapy (like patches or gum), and text-message support to help smoking parents quit. The goal is to reduce children's exposure to secondhand smoke. About 1,200 smoking parents in Hong Kong who live with …

This study tests whether adding financial coaching to standard smoking cessation counseling helps low-income smokers quit. 602 participants will receive either standard counseling or integrated financial-smoking counseling, plus nicotine patches. The goal is to see if addressing …

This study tests whether a 5-day course of accelerated deep transcranial magnetic stimulation (aTMS) can help adults aged 18–65 quit smoking. Participants receive 4 brain stimulation sessions per day for 5 days. The main goal is to see if the treatment is tolerable and practical,…

This study tests a new way to help people stop smoking by combining standard quit-smoking programs with a computer task that retrains unconscious urges to approach cigarettes. About 300 adults who want to quit will be randomly assigned to one of three groups: standard treatment p…

This study tests whether cannabidiol (CBD), a compound from hemp, can help people who want to quit smoking reduce their cigarette use. 120 adults with tobacco use disorder will receive either CBD or a placebo twice daily for 56 days. Researchers will measure nicotine levels and c…

This study is testing a combination of counseling, peer mentoring, text messages, and nicotine replacement therapy to help people with HIV quit smoking. Researchers will enroll 500 smokers living with HIV in New York City to find the most effective and affordable approach. The go…

This study tests whether a mobile app can help adults in Singapore quit smoking. About 100 participants will be randomly assigned to receive the app-based support or standard care, and researchers will track how many stay smoke-free for 6 months. The goal is to see if this approa…

This study tests whether varenicline (Chantix), a drug already used to help people quit smoking, can also help them reduce cannabis use. Two hundred adults in South Carolina who smoke cigarettes and use cannabis will receive either varenicline or a placebo, plus counseling. The g…

This early-stage study at Yale is testing whether a combination of two medications (naltrexone and bupropion) plus cognitive-behavioral therapy can help people who are considering bariatric surgery lose weight and stop smoking. Twenty participants will receive the treatment for f…

This study tests whether changing treatment can help smokers who relapse early after trying to quit. 544 participants who want to quit smoking will receive free nicotine patches, lozenges, varenicline, or e-cigarettes for 12 weeks. All visits are remote, and the study lasts 6 mon…

This study tests whether a non-invasive brain stimulation technique called TMS can help people with mental illness quit smoking. Forty daily smokers with psychiatric conditions will receive either TMS or standard care. The goal is to see if TMS is practical and effective in real-…

This study tests a mobile app and financial rewards to help veterans quit smoking before major elective surgery. Smoking increases the risk of complications after surgery, but quitting can be hard. The program uses a carbon monoxide monitor and app to verify abstinence, with ince…

This study tests a smoking cessation program in the construction industry, where safety managers are trained to help workers quit smoking. About 608 construction workers will receive nicotine gum and access to a telephone quit-line. The goal is to find the most effective and cost…

This study tests whether combining text message support with financial incentives helps low-income pregnant women quit smoking more than text messages alone. Thirty pregnant women who smoke will be split into two groups to see which approach is more acceptable and effective. The …

This study compares two versions of a smartphone app called Living Free from Tobacco (LiFT) to help young adults ages 18-30 quit using nicotine and tobacco products. About 140 participants will use one of two app versions: one focuses on building mental flexibility to support qui…

This study tests a smartphone chatbot designed to help Black adults quit smoking. The chatbot sends alerts during times when a person is most likely to smoke and suggests ways to handle triggers. 120 participants will be randomly assigned to use the chatbot or not, and researcher…

This study tests a free, internet-based program that uses mindfulness and behavioral strategies to help adults reduce or quit smoking and vaping. About 406 participants in Switzerland and Türkiye will be randomly assigned to the program or a control group. The program includes ei…

This pilot study tests whether adding ear acupressure (small seeds taped to ear points) to standard nicotine patches or gum can reduce cravings, withdrawal symptoms, and anxiety in psychiatric inpatients who must stop smoking during their hospital stay. Sixty participants will be…

This study tests a new way to help veterans with PTSD stop smoking. It combines counseling, nicotine gum, and a noninvasive brain stimulation called TMS. Researchers want to see if this approach is practical and helps veterans stay smoke-free for at least 3 months. About 50 veter…

This study tests whether a smartphone app that uses augmented reality (AR) can help people quit smoking when used alongside standard quitline counseling. The app shows smoking-related cues to help users manage cravings. The trial will enroll 3,600 adult daily smokers and measure …

This study tests whether mindfulness meditation in virtual reality can reduce cigarette cravings and help people quit smoking. Two hundred smokers will be split into two groups: one gets six VR meditation sessions over six weeks, and the other uses nicotine patches and gum. Resea…

This study tests whether a daily oral dose of cannabidiol (CBD) can help people stop smoking tobacco. Fifty adults who smoke more than 10 cigarettes a day and want to quit will take CBD during several practice quit attempts. The goal is to see if CBD increases short-term abstinen…

This study tests whether a personalized approach to smoking cessation helps cancer patients quit. Researchers will use patients' clinical, genetic, and biomarker information to create tailored treatment plans. The study involves 112 participants and compares this precision treatm…

This study tests whether clavulanic acid, a drug used to boost antibiotics, can help people smoke less. Thirty adult smokers will take either the drug or a placebo for several weeks. Researchers will measure smoking levels and use brain scans to see if the drug changes how the br…

This study tests a digital coaching program that uses a chatbot to help people quit smoking. The program aims to boost motivation, educate about quitting tools, and create a personalized quit plan. Researchers will enroll 440 adult smokers and check if they have quit after 6 mont…

This pilot study tests whether screening and treating sleep disorders during tobacco or cannabis cessation therapy helps people stay abstinent longer. 80 participants will either get usual care or extra sleep-focused care. The study follows them for 6 months to see if addressing …

This study tests a program called Contingency Management that gives Veterans rewards for quitting smoking, verified by breath tests. Researchers will first gather feedback from Veterans and staff, then run a small pilot with 20 Veterans over 5 weeks. If successful, a larger trial…

This study looks at young adults aged 18 to 25 who use both tobacco/nicotine products and cannabis. Researchers want to understand what happens to cannabis use when participants try to quit nicotine. All participants receive remote counseling and incentives to stop using nicotine…

This study tests a program that combines help with quitting smoking and getting a lung cancer screening (a special CT scan) for African American smokers. The goal is to reduce the high rate of lung cancer in this group. About 250 people will take part, and researchers will track …

This study recruits 600 adults who want to quit smoking. Participants use a smartphone app to take photos of their environment when they smoke and at random times. Researchers use artificial intelligence to analyze these images and identify environmental triggers that lead to rel…

This study tests whether combining neurofeedback with integrative body-mind training can change brain function and reduce cravings and substance use in adults who regularly use alcohol, cannabis, and cigarettes. Researchers will use brain scans to measure changes in connectivity …

This study aims to understand what makes it easier or harder for African American smokers to use a smartphone app designed to help them quit. Researchers will first get feedback from a small group to improve the app, then test it with 30 people who want to quit. The app sends rem…

This observational study at Yale University is recruiting 200 people who are already taking part in another trial where they may receive a serotonergic psychedelic (like psilocybin or LSD) or a placebo. Researchers want to understand how these substances change the brain's inform…

This study looks at how the drug propranolol and nicotine patches, alone or together, change brain activity and cravings when smokers see smoking-related cues. Eighty daily smokers will undergo brain scans while viewing these cues. The goal is to understand the brain mechanisms b…

This study looks at whether oral nicotine pouches (like ZYN) can be a good substitute for cigarettes or smokeless tobacco. Researchers will test different nicotine levels and forms to see which ones reduce cravings and appeal to users. 160 adult tobacco users will try the pouches…

This study looks at how daily vapers and cigarette smokers experience withdrawal when they stop using nicotine for 24 hours. Researchers will measure mood, cravings, attention, and other symptoms in 370 participants. The goal is to better understand nicotine dependence and help d…

This study at Johns Hopkins University is testing nicotine pouches (like Zyn) in 120 adults—60 regular smokers and 60 people who rarely use nicotine. Participants will use the pouches in two lab sessions while researchers measure how much nicotine gets into the blood, how appeali…

This study tests whether the drug cytisinicline changes how the brain reacts to seeing smoking-related images in daily smokers who are not trying to quit. Sixty-four participants will receive either the drug or a placebo and undergo brain scans while watching videos of smoking an…