Champix (varenicline) is a prescription medication classified as a smoking cessation aid. It works by targeting nicotine receptors in the brain, reducing the pleasurable effects of smoking and decreasing withdrawal symptoms. Clinical studies have shown that Champix can significantly increase the chances of successfully quitting smoking compared to placebo. It is an important tool in smoking cessation programs and can help individuals overcome nicotine addiction. Champix should be used as part of a comprehensive smoking cessation plan that includes behavioral support.