This clinical trial is focused on helping people who smoke at least 10 cigarettes a day to quit smoking. The study is comparing three different methods to assist with smoking cessation: electronic cigarettes with nicotine, electronic cigarettes without nicotine, and a medication called . Varenicline is a treatment that comes in the form of film-coated tablets and is known by the brand name . It is a licensed medication used to help people stop smoking.
The purpose of the study is to evaluate how effective electronic cigarettes containing nicotine are compared to electronic cigarettes without nicotine and to . Participants in the study will be randomly assigned to one of these three groups. The study will last for a period of three months, during which participants will be monitored to see if they can stop smoking continuously for the last four weeks of the treatment period. The study will also look at the safety of these methods by comparing any serious or non-serious side effects that may occur.
Throughout the study, researchers will also assess other factors such as the time it takes for participants to relapse into smoking after their target quit day, changes in the number of cigarettes smoked per day, cravings for tobacco, and withdrawal symptoms. The goal is to find out which method is most effective and safe for helping people quit smoking.



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