Active clinical trials for "Tobacco Use Disorder"

The purpose of this study is to understand how to develop and deliver a better smoking cessation program for lower-income young adult smokers.

The purpose of this research study is to better understand why people gain weight when they quit smoking by examining food intake and changes in brain activity in smokers when they are smoking as usual compared to when they have been deprived of cigarettes (i.e., have not smoked for 4 days) as compared to a non-smoker control group.

Smoking cessation and relapse prevention represent and important opportunity to improve cancer survival rates, reduce the risk of cancer treatment complication, and improve the quality of life of patients with and survivors of cancer. Previous studies showed that repetitive TMS (rTMS) reduced cue craving to smoking and treat nicotine dependent smokers. Recently one study completed by our team demonstrated that 10 sessions of rTMS over the left dorsolateral prefrontal cortex (DLPFC) reduced cigarette consumption and cue craving, and also increased quitting rate on target quit date in nicotine dependent smokers. Thus, we propose conducting a controlled, double-blind trial comparing the effect of treatments of active rTMS and sham rTMS on cigarette abstinence days, cigarette consumption and smoking craving during a 7-days of quit attempt period in 20 nicotine-dependent patients with cancer. Specific aims are: Aim 1: Assess a feasibility of the rTMS for smoking cessation in cancer patients. Aim 2: Obtain preliminary estimates of whether one-week active rTMS of left DLPFC tends to be more efficacious than sham rTMS during a 7-days of quit attempt laboratory model period increasing abstinence days, and also decreasing cigarette consumption and cue-elicited craving in cancer patients with smoking.

The study will recruit an anticipated 256 adults who currently smoke cigarettes and report a willingness to try switching to alternative, non-combustible products. Participants will be randomized to receive either e-cigarettes or nicotine pouches for a duration of 4 weeks and to 1 of 4 possible regulatory scenarios within products where flavor availability is either menthol and tobacco/unflavored available or tobacco/unflavored only available, and nicotine concentration is either higher (5% Vuse Alto e-cig, 6mg Zyn pouch) or lower (3% Vuse Alto e-cig, 3mg Zyn pouch). Participants will return for bi-weekly research visits (in person or remote videocall) to complete measures for study aims. Participants will complete a final follow-up at Week 6 to assess maintenance of cigarette reduction and willingness to continue using products once they are no longer provided. The investigators expect to observe which products and constituents lead to greater smoking reduction.

Pilot, eight week, open-label, within-subject cross over trial of four weeks of standard clinical care (SCC) in an outpatient substance abuse treatment program and four weeks of SCC and varenicline among current and former tobacco smokers with frequent cannabis use.

The purpose of this study is to determine the efficacy, acceptability and unintended consequences of very low nicotine content cigarettes (VLNCC) in smokers with current or past year substance use disorders (SUD). The primary aim of this study is to determine whether 6 weeks of VLNCC compared to normal nicotine content cigarettes (NNCC) will result in more smoking cessation over 6 months and reduce cigarette use, cotinine, and biomarkers of toxicity. We will also assess the effects of VLNCC versus NNCC cigarettes on frequency of substance use and substance cravings (drugs and alcohol) because this is relevant to the safety of these products among smokers with SUD. Secondary aims are to study effects on cigarette craving, nicotine withdrawal and dependence, and depressed mood. Methods: Random assignment to VLNCC versus NNCC of up to 312 smokers with SUD will be balanced by gender, degree of tobacco dependence, and recent drug and alcohol use. All smokers will be provided with smoking counseling. Assessments over 6 months will assess effects both during the 6 weeks of using research cigarettes and after return to usual cigarettes. The importance is in determining the viability and safety of this public health strategy in terms of effects on both smoking and other substance use in a highly addicted population, which is essential to determine before the FDA implements this policy.

This study examines the efficacy of yoga as a complementary therapy for smoking cessation

Nicotine dependence may prolong the exposure to toxic substances that cause various diseases. The Central Nervous System (CNS) is consisted by a large amount of Polyunsaturated Fatty Acids (PUFAS) from omega-3 serie. Omega-3 takes part in several actions, including the modulation of dopaminergic neurotransmission. In its deficiency is detected a hypofunctioning of the mesolimbic and mesocortical pathway, related to the reward system, involved on the context of nicotine dependence. Treatment using dietary supplementation with omega-3 shows improvements in several diseases, including mood disorders such as anxiety and depression. The investigators hypothesis is that supplementation with these fatty acids can restore the levels of omega-3 and could decrease nicotine dependence. The investigators objective is to investigate a possible association between increased serum levels of omega-3 and the reduction in nicotine dependence.

This randomized clinical trial studies interest in smokeless tobacco product as a substitution for cigarettes in current smokers. Use of smokeless tobacco products may help people stop smoking. Measuring use of other sources of nicotine for cigarettes under a variety of different conditions may help determine whether and how much smokers are willing to use substitutions

Varenicline is the best smoking cessation agent to date; however it is only effective in a subgroup of smokers and is associated with undesirable side effects in other subgroups. To understand the underlying pharmaco-heterogeneity, the proposed project will use perfusion functional magnetic resonance imaging and a functional candidate gene association approach using brain, behavioral, and clinical endpoints in a placebo-controlled study of chronic varenicline administration in smokers. Brain and behavioral responses to smoking cues will be will be significantly greater in 9/10-repeats compared to 10/10-repeats. DAT 9/10-repeat smokers receiving varenicline will have better treatment outcome compared to 10/10-repeats. For the purposes of the clinical trial portion of the study, the change from cigarettes per day at Baseline to the last day of treatment will be reported.