ABC News reports that the US Veterans Administration waited months before notifying vets that the drugs they were given for smoking cessation were associated with psychiatric side effects. The vets in the study had PTSD and were trying to quit smoking. According to WebMD, the 1 year efficacy rate for Chantix is 14%. The VA is continuing the study for Chantix despite the warnings.
Chantix is a trademark of Pfizer.