In 2006, the website, Chantix Home, stated the drug “has no match among the smoking cessation drugs at present..
The site lists side effects, based on the clinical trials performed by Pfizer (the maker of Chantix) are pretty common ones such as nausea, sleep disorder, gas, constipation, headache, and loss of taste.
Since that time, more than five million patients have used the drug, some with serious, even life-threatening, side effects. These side effects include: severe mood swings, depression, agitation and aggression, nervousness, impaired driving skills, and suicidal ideation and behavior.
The government has banned the use of Chantix for pilots. By August, 2008, Chantix had been linked to at least 40 suicides and 400 attempted suicides according to the FDA and the agency reviewed more serious side effect reports for Chantix than for any other medication on the market in the first quarter of 2008.