This is a research study to find out if a smoking cessation medication, varenicline, is effective when given to smokers, remotely, as a one-time, 4-week sample.
Participants will either receive a sample of varenicline, or not. This will be decided randomly. The medicine will be mailed to participants and participants will complete 5 study contacts in addition to completing daily diaries for the first 4 weeks of the study. Participation will last 3 months.
Varenicline is a well-established medication that helps smokers quit. If participants are in the group that receives varenicline, it may help them too. But they are not required to use it, and it is completely up to them to use as they wish. Side effects from taking varenicline might include insomnia, headache, or nausea. Some individuals report negative changes in mood. Most smokers who use varenicline do not experience these symptoms.