| Not Yet Recruiting | A Web-Based Text Messaging for Tobacco Cessation in Rural Mississippi NCT07431619 | University of Mississippi Medical Center | N/A |
| Recruiting | Health Warnings and Counseling for Smoking Cessation NCT07098065 | Hitotsubashi University | N/A |
| Recruiting | Extended Intervention for Tobacco Use (EXIT) for People Experiencing Homelessness NCT07148232 | University of California, San Francisco | Phase 4 |
| Recruiting | Neural Mechanisms Connecting Deficient Sleep and Smoking Relapse NCT06609369 | Yale University | Phase 2 |
| Unknown | Adapting a Betel Quid Cessation Program for a High-risk Community in Malaysia and Evaluating Its Effectiveness NCT05782166 | University of Malaya | N/A |
| Recruiting | FRESH Delivers: An Innovative Approach to Reducing Tobacco Use Among Rural Smokers NCT05429892 | University of Arkansas | N/A |
| Enrolling By Invitation | Tobacco Cessation Texting Intervention for People Living With HIV Who Smoke in Vietnam NCT05863923 | University of Massachusetts, Worcester | N/A |
| Completed | A Brief Digital Screening Tool to Address Tobacco and E-cigarette Use in Pediatric Medical Care NCT05366790 | St. Justine's Hospital | N/A |
| Completed | The Effect of Immediate Smoking Cessation Interventions for Smokers With Chronic Airway Diseases NCT05764343 | Recep Tayyip Erdogan University Training and Research Hospital | N/A |
| Completed | Impact of an Intervention of Screening, Treatment Initiation and Referral to PROmote Smoking CEssation in Emer NCT05552534 | Assistance Publique - Hôpitaux de Paris | N/A |
| Enrolling By Invitation | Persistent Poverty Counties Pregnant Women With Medicaid NCT05415371 | University of Oklahoma | N/A |
| Recruiting | Adaptation and Evaluation of a Culturally and Gender Relevant Tobacco Cessation Among Women in Brazil: An Inte NCT04865276 | University of Alabama at Birmingham | N/A |
| Unknown | Onsite Tobacco Cessation Treatment for Patients With PAD NCT05469698 | University of Oklahoma | N/A |
| Completed | To Promote Tobacco Free Life in the Dental Practice in France NCT04498858 | University Hospital, Bordeaux | — |
| Completed | Pilot Testing a Digital Intervention to Improve Smoking Cessation in Persons With Serious Mental Illness NCT04367506 | University of Maryland, Baltimore | N/A |
| Not Yet Recruiting | A Stepped Care Approach to Treating Tobacco Use in Rural Veterans NCT04501016 | Iowa City Veterans Affairs Medical Center | Phase 2 / Phase 3 |
| Withdrawn | Development of a Scalable Intervention to Improve Smoking Cessation in Persons With Serious Mental Illness NCT04340102 | University of Maryland, Baltimore | N/A |
| Completed | Text Message Quit Vaping Intervention for Young Adults NCT04251273 | Truth Initiative | N/A |
| Completed | Support Person Intervention to Promote a Smoking Helpline Among Under Resourced Smokers NCT03096145 | Mayo Clinic | N/A |
| Completed | A Study of Tobacco Smoke and Children With Respiratory Illnesses NCT03062709 | MaineHealth | N/A |
| Completed | Testing the Effectiveness of a Betel Nut Cessation Program NCT02942745 | University of Guam | N/A |
| Completed | Addressing Tobacco Use Disparities in Rural Older Adults Through an Innovative Mobile Phone Intervention NCT02510716 | Duke University | N/A |
| Unknown | Medium Vs Low Intensity Intervention in Tobacco Cessation and Control in Zari Workers NCT02103868 | Tata Memorial Hospital | N/A |
| Completed | Sex Differences, Hormones & Smoking Cessation NCT01744574 | University of Minnesota | N/A |
| Completed | Tobacco Assessment and Intervention With Low-Income Persons Living With HIV-AIDS (PLWHA) in Community-Based AI NCT01482923 | Memorial Sloan Kettering Cancer Center | — |
| Completed | Intervention Study to Increase Smoking Cessation Rates Among Public Housing Residents NCT01651611 | Boston University | N/A |
| Completed | Positively Smoke Free on the Web (PSFW) for Smokers Living With HIV NCT01570595 | Georgetown University | Phase 1 / Phase 2 |
| Completed | Support Person Intervention to Promote a Smoking Helpline NCT01331226 | Mayo Clinic | N/A |
| Completed | Effectiveness of the Spirometry Test as a Motivational Tool for Quitting Tobacco in Primary Care NCT03377738 | Fundacion para la Formacion e Investigacion Sanitarias de la Region de Murcia | N/A |
| Completed | Adolescent Smoking Cessation in Pediatric Primary Care NCT01312480 | American Academy of Pediatrics | N/A |
| Completed | P60 Program Project Grant-Outreach for Smoke-Free Homes NCT01574560 | University of Minnesota | N/A |
| Completed | Tobacco Cessation Treatment for Alaska Native Youth NCT01099384 | Mayo Clinic | Phase 1 |
| Completed | NicVAX/Placebo as an Aid for Smoking Cessation NCT00836199 | Nabi Biopharmaceuticals | Phase 3 |
| Terminated | Effectiveness of the Swedish National Tobacco Quitline NCT02085616 | Uppsala University | N/A |
| Completed | Smoking Cessation Effect of Tea Filter Through Inhibition of Nicotine Receptor NCT00971529 | General Hospital of Beijing PLA Military Region | — |
| Completed | The Impact of a Tobacco Control Intervention in African-American Families NCT01164306 | Augusta University | N/A |
| Completed | Workplace Tobacco Cessation And Oral Cancer Screening Study NCT00750503 | Tata Memorial Hospital | Phase 3 |
| Completed | Effectiveness of Intensive Smoking Cessation Interventions in Patients With Cancer NCT04198688 | Bispebjerg Hospital | — |