Chantix and Insomnia
Many people who take Chantix experience insomnia. In many cases, it is difficult or impossible to know if insomnia is actually caused by Chantix or by other factors, such as trying to quit smoking.
If you develop insomnia while taking Chantix, make sure to talk with your healthcare provider. He or she may be able to recommend other treatments, including adjusting your Chantix dosage or trying another treatment.