Varenicline is used by adults to help stop smoking. To increase your chance of success, use this medication with a stop-smoking program that includes education, support, and counseling. Quitting smoking lowers your risk of heart and lung disease, as well as cancer. Varenicline works by blocking... Discuss the risks and benefits of this medication, as well as other ways to quit smoking (such as nicotine replacement treatment), with your doctor. View More Info

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