| Not Yet Recruiting | Effectiveness of Brief Smoking Cessation Counselling in Pre-Anaesthesia Assessment Clinic NCT07505147 | Pok Oi Hospital | N/A |
| Not Yet Recruiting | GLP-1 Receptor Agonists to Decrease Ethanol and CVD Risk in HIV NCT07221214 | Vanderbilt University Medical Center | Phase 2 |
| Not Yet Recruiting | Cigarette Filter Study NCT07348679 | Rutgers, The State University of New Jersey | N/A |
| Not Yet Recruiting | Wound Healing Following Extraction and Ridge Preservation in Smokers and Non-smokers NCT07372183 | Marquette University | — |
| Recruiting | Trauma-Informed Care for Smoking Cessation for Pregnancy NCT07129590 | University of California, San Francisco | N/A |
| Recruiting | ACT Lung Health Intervention: Phase Two NCT06945120 | Dana-Farber Cancer Institute | N/A |
| Completed | Tabata Exercise on Nitric Oxide Synthases and Maresin NCT07412639 | Ataturk University | N/A |
| Recruiting | Vape Use Among Younger & Older Smokers NCT07214168 | Abramson Cancer Center at Penn Medicine | — |
| Completed | A Consumer Use Behavior Study to Evaluate Puffing Topography and Average Daily Consumption of Heated Tobacco P NCT07175987 | RAI Services Company | N/A |
| Recruiting | University of Michigan COPD Identification Through Lung Cancer Screening Cohort Study - MAP2 NCT07482475 | University of Michigan | — |
| Not Yet Recruiting | Impact of Smoking on Ultrasound-Guided Infraclavicular Brachial Plexus Block Onset and Duration NCT06755229 | Selcuk University | — |
| Completed | Tobacco/Nicotine Purchase Patterns Across SES NCT06795997 | Virginia Polytechnic Institute and State University | N/A |
| Recruiting | A Study Evaluating the Use of an Indoor Air Quality Monitor to Promote a Smoke-free Home NCT06693700 | Memorial Sloan Kettering Cancer Center | N/A |
| Completed | Study of Gum Tissue Proteins in Smokers vs. Non-smokers After Cleaning NCT07339670 | Al-Azhar University | N/A |
| Completed | Assessing E-Cigarettes for Tobacco Harm Reduction in the Context of Lung Cancer Screening NCT06472869 | Massachusetts General Hospital | N/A |
| Completed | SMOKING AND PRESENCE OF FRANK'S SIGN NCT07427745 | Samsun University | — |
| Recruiting | The Efficacy of Conventional Screening Versus mHealth Screening in Early Detection of Oral Potentially Maligna NCT06535867 | Memorial Sloan Kettering Cancer Center | — |
| Completed | Effect of Buteyko Breathing Exercise Combined With Postural Stability Exercises on Maximal Oxygen Consumption NCT07257783 | Yasmeen Alaa Abd El-Hamied Ahmeed | N/A |
| Completed | Evaluation of the Effects of Smoking on Trabecular Bone Microarchitecture Using CBCT in Periodontal Disease NCT06676358 | Okan University | — |
| Recruiting | Leveraging Community Pharmacists to Optimize Smoking Cessation Services for Rural Smokers in Appalachia NCT05660525 | University of Virginia | N/A |
| Recruiting | Dyadic Financial Incentive Treatments for Dual Smoker Couples NCT06296849 | University of Georgia | N/A |
| Active Not Recruiting | Process and Effect Evaluation of the KickAsh! Intervention NCT05920772 | University Ghent | N/A |
| Completed | BREATHE 2 Clinic Stop-Smoking Treatment Outreach Study NCT05683821 | University of Wisconsin, Madison | N/A |
| Unknown | Preloaded Combination Nicotine Replacement Therapy on Smoking Cessation of Adult Population in Kazakhstan NCT05484505 | Nazarbayev University | EARLY_Phase 1 |
| Completed | The Impact of Standardized Tobacco Product Packaging on Young Adults in the Retail Environment NCT05973981 | RAND | N/A |
| Unknown | Use of Dual-light Photodynamic Therapy as an Adjunct to Periodontal Treatment in Smokers NCT05962801 | Aristotle University Of Thessaloniki | N/A |
| Completed | Dual Use of ENDS and Combustible Cigarettes NCT05280535 | Brown University | N/A |
| Completed | Impact of New Standards for Tobacco Products Among Dual E-Cigarette/Combusted Cigarette Users - Project 2 NCT05473585 | Duke University | N/A |
| Completed | Testing the Efficacy of A Scalable, Telephone-Delivered, Guided Imagery Tobacco Cessation Intervention NCT05277831 | University of Arizona | N/A |
| Completed | Low Nicotine Cigarettes, Smoking, and Chronic Pain NCT05032755 | Duke University | N/A |
| Unknown | Platelet Rich Fibrin Treatment for the Alveolar Ridge Preservation in Smokers NCT06190860 | Universidad de los Andes, Chile | N/A |
| Active Not Recruiting | Biomarkers of Exposure and Effect in Standardized Research E-cigarette (SREC) Users NCT04003805 | Masonic Cancer Center, University of Minnesota | Phase 1 |
| Completed | AAT + tDCS to Reduce Cue-induced Craving and Smoking Behavior NCT05426460 | Cynthia Conklin | N/A |
| Unknown | Using ANDS to Reduce Harm for Low SES Cigarette Smokers NCT05327439 | Brown University | N/A |
| Unknown | Does Smoking Effect Spinal Anesthesia? NCT05343845 | Yuzuncu Yil University | — |
| Unknown | Establishment of a Method for Extraction and Quantification of Gingival Tissue Nicotine y NCT05736250 | University of Liege | — |
| Recruiting | Optimizing Tobacco Treatment Delivery for People Living With HIV NCT05019495 | Medical University of South Carolina | N/A |
| Completed | Impact of Solarplast® on Immunity in Active Smokers and Non-smokers NCT05162820 | University of Memphis | N/A |
| Completed | A Comparison of Exhaled Carbon Monoxide Measurements Using the iCOquit Smokerlyzer and Vitalograph Breath CO M NCT04826549 | Rose Research Center, LLC | — |
| Completed | Clinical Learning Study for a Mobile Smoking Cessation Program NCT04857515 | Click Therapeutics, Inc. | — |
| Completed | Lung and Breast Cancer Prevention by an Integrated Intervention of Maternal Smoking Cessation and Breastfeedin NCT05123118 | Xiaozhong Wen | N/A |
| Completed | FDA Cigarette Warning Labels: Eye Tracking Study NCT04936724 | Abramson Cancer Center at Penn Medicine | N/A |
| Completed | Switching to a Vaping Device: Evaluating Risk Reduction Among Quitline Treatment Failures NCT03502200 | Ohio State University Comprehensive Cancer Center | N/A |
| Completed | Smoking Cessation Pilot for People Living With HIV (PLWH) NCT04808609 | Columbia University | N/A |
| Completed | Perceptions of Cigarette Smoking in Young Adults NCT03953508 | University of Oklahoma | N/A |
| Unknown | Effects of Maternal Smoking on Fetal Liver Circulation NCT04721782 | Bezmialem Vakif University | — |
| Completed | Health Systems Reach Interventions Project NCT04199117 | University of Wisconsin, Madison | Phase 4 |
| Terminated | PRogetto Salute Parma NCT04282694 | University of Parma | — |
| Completed | Isradipine Enhancement of Virtual Reality Cue Exposure for Smoking Cessation NCT03083353 | University of Texas at Austin | EARLY_Phase 1 |
| Completed | Effectiveness of an Integrated Treatment to Address Smoking Cessation and Anxiety/ Depression in People Living NCT03904186 | Massachusetts General Hospital | N/A |
| Completed | GeoScan and Remote Geo Smoking Study: Neural and Behavioral Correlates of Smokers' Exposure to Retail Environm NCT04279483 | Abramson Cancer Center at Penn Medicine | N/A |
| Completed | Connecting Alaska Native People to Quit Smoking NCT03645941 | Mayo Clinic | N/A |
| Completed | Cigarette Packaging of Low Nicotine Cigarettes NCT03802019 | Abramson Cancer Center at Penn Medicine | N/A |
| Completed | Personalized Feedback for Distress Intolerant Smokers NCT03918031 | University of Houston | N/A |
| Completed | Heated Tobacco Products vs Electronic Cigarettes NCT03569748 | University of Catania | N/A |
| Completed | DECIDE: Developing Tools for Lung Cancer Screening Discussion Improvement NCT03891602 | Hackensack Meridian Health | — |
| Completed | Feasibility of a Decision Aid for E-Cigarettes in Primary Care NCT03836573 | University of Florida | N/A |
| Completed | Hollings Cancer Center Varenicline Sampling Study NCT03742154 | Medical University of South Carolina | EARLY_Phase 1 |
| Completed | An Extended Facebook Intervention for Young Sexual and Gender Minority Smokers NCT03553992 | University of California, San Francisco | N/A |
| Recruiting | Imaging Sex Differences in Smoking-Induced Pulmonary Inflammation NCT03721822 | University of Pennsylvania | Phase 1 |
| Active Not Recruiting | Randomized Trial of Electronic Cigarettes With or Without Nicotine in Smoking Cessation. NCT03630614 | Assistance Publique - Hôpitaux de Paris | Phase 3 |
| Completed | Enhancing Self Regulation Among Smokers NCT04161144 | Medical University of South Carolina | Phase 2 |
| Completed | Incorporating Financial Incentives to Increase Smoking Cessation Among Asian Americans Residing in New York Ci NCT03397511 | NYU Langone Health | N/A |
| Terminated | QuitFast: Evaluating Transcranial Magnetic Stimulation as a Tool to Reduce Smoking Directly Following a Quit A NCT03576768 | Medical University of South Carolina | N/A |
| Completed | Evaluating New Nicotine Standards for Cigarettes - Project 3 NCT03194256 | Brown University | N/A |
| Completed | Addictive Potential of LCCs in Dual Users NCT03496077 | UConn Health | N/A |
| Completed | Couples Dynamics and Smoking Cessation NCT03885336 | University of Southern California | — |
| Completed | Postpartum Smoking Relapse Prevention by Breastfeeding Promotion NCT04670822 | State University of New York at Buffalo | N/A |
| Terminated | tDCS and Cognitive Training Intervention for Chronic Smokers With Schizophrenia NCT03588728 | University of Pittsburgh | N/A |
| Unknown | Surgical Treatment of Periimplantitis in Patients With Risk Factors NCT03814434 | Luiz Antonio Pugliesi Alves de Lima | N/A |
| Completed | Nicotine TMS EFT Smoking Pilot Study NCT03579953 | Medical University of South Carolina | EARLY_Phase 1 |
| Completed | Tobacco Use Treatment in Cancer Patients NCT03482583 | University of Florida | Phase 4 |
| Completed | A Facebook Intervention for Young Sexual and Gender Minority Smokers NCT03259360 | University of California, San Francisco | N/A |
| Completed | AXS-05 Phase II Trial on Smoking Behavior NCT03471767 | James Davis | Phase 2 |
| Completed | Aerobic and Tai Chi Exercise Among the Smoker University Students NCT03851029 | Riphah International University | N/A |
| Terminated | Electroretinogram: a New Human Biomarker for Smoking Cessation Treatment NCT03213418 | New York State Psychiatric Institute | N/A |
| Completed | An Interprofessional Intervention to Reduce Smoking Rates NCT03380910 | Virginia Commonwealth University | N/A |
| Unknown | Grip&Health: Behavioural Intervention to Reduce Smoking, Stress and Improve Financial Health in Low-SES in Rot NCT03553979 | Erasmus Medical Center | N/A |
| Completed | Effect of Switching From Cigarette Smoking to the Use of IQOS on Periodontitis Treatment Outcome NCT03364751 | Philip Morris Products S.A. | N/A |
| Completed | GCF IL-17 Levels and Oxidative Status of Smoking and Non-smoking Individuals With Periodontitis NCT04115176 | Ondokuz Mayıs University | — |
| Completed | Personalized Feedback for Smokers With Elevated Anxiety Sensitivity NCT03382093 | University of Houston | N/A |
| Completed | Pictorial Warning Labels & Memory for Relative & Absolute Cigarette Health-risk Information Over Time in Adult NCT03499340 | Ohio State University | N/A |
| Completed | Compare the Pharmacokinetic Characteristics and the Safety Between Zeropix and Champix in Healthy Adult Male S NCT03362008 | Jeil Pharmaceutical Co., Ltd. | Phase 1 |
| Completed | Examination of Low Wattage and High Wattage E-Cigarettes NCT03113136 | Ohio State University Comprehensive Cancer Center | N/A |
| Completed | Helping Poor Smokers Quit NCT03194958 | Washington University School of Medicine | N/A |
| Completed | Investigation of Secreted Phosphoproteins and PiP3 (Phosphoinositolphospat 3) in Sputum NCT03076086 | Fraunhofer-Institute of Toxicology and Experimental Medicine | N/A |
| Completed | A Cognitive Behavioral Stress Intervention for Women Who Smoke NCT03077945 | Rutgers, The State University of New Jersey | N/A |
| Completed | Smoking and Peptidoglycan Recognition Protein-1 and Initial Periodontal Therapy NCT03915730 | Kırıkkale University | N/A |
| Completed | Pictorial Warning Labels and Memory for Relative and Absolute Cigarette Health-risk Information Over Time in T NCT03500965 | Ohio State University | N/A |
| Completed | Pictorial Warning Labels, Numeracy, and Memory for Numeric Cigarette Health-risk Information Over Time NCT03501472 | Ohio State University | N/A |
| Unknown | Adverse Airway Effects From Tobacco and E-Cigarettes NCT03251053 | Miami VA Healthcare System | N/A |
| Recruiting | Maternal Smoking Cessation and Pediatric Obesity Prevention NCT03514602 | State University of New York at Buffalo | N/A |
| Completed | Pictorial Warning Labels and Memory for Cigarette Health-risk Information Over Time NCT03375840 | Ohio State University | Phase 3 |
| Completed | Study of Smoking Trajectory in Newly Diagnosis Lung Cancer Patients NCT03642041 | National Defense Medical Center, Taiwan | — |
| Completed | Smoking Cessation for Young Adult Pacific Islanders: Motivating Pacifika Against Cigarettes and Tobacco NCT03238456 | Claremont Graduate University | N/A |
| Completed | Staccato Loxapine PK in Smokers and Nonsmokers NCT00873769 | Alexza Pharmaceuticals, Inc. | Phase 1 |