Jim Burns wrote:
...for you guys trying to quit smoking.
Jim



From the Chantix website.

Side Effects and Safety

What are the possible side effects of CHANTIX?

The most common side effects of CHANTIX include:

nausea
sleep disturbance (trouble sleeping, or vivid, unusual, or strange dreams)
constipation
gas
vomiting

Some patients reported changes in behavior, agitation, depressed mood,
suicidal thinking or behavior when attempting to quit smoking while
taking CHANTIX. If you have any of these symptoms, or if your family or
caregiver observes these symptoms, please tell your doctor immediately.
Also tell your doctor about side effects that bother you or that do not
go away.

These are not all the side effects of CHANTIX. Ask your doctor or
pharmacist for more information.

Use caution driving or operating machinery until you know how quitting
smoking and/or using CHANTIX may affect you.