(varenicline tartrate)
Medication Guide
{{section_name_patient}}
{{section_body_html_patient}}
Prescribing Information
How should I take CHANTIX?
Weeks 1 through 4
Reduce your smoking to reach one-half of your starting daily number of cigarettes.
Example: If you usually smoke 20 cigarettes each day, reduce your smoking to 10 cigarettes each day during weeks 1 through 4.
Weeks 5 through 8
Reduce your smoking to reach one-quarter of your starting daily number of cigarettes.
Example: If you usually smoked 20 cigarettes each day, reduce your smoking to 5 cigarettes each day during weeks 5 through 8.
Weeks 9 through 12
Keep reducing your smoking until you are no longer smoking (you reach zero cigarettes each day).
Aim to quit by the end of the 12th week of treatment, or sooner if you feel ready. Continue to take CHANTIX for another 12 weeks, for a total of 24 weeks of treatment.
Starting CHANTIX before your quit date gives CHANTIX time to build up in your body. You can keep smoking during this time. Take CHANTIX exactly as prescribed by your healthcare provider.
Day 1 to Day 3
Day 4 to Day 7
Day 8 to end of treatment
Additional Resources
Chat online with Pfizer Medical Information regarding your inquiry on a Pfizer medicine or vaccine.
Speak with a Pfizer Medical Information Professional regarding your Pfizer medicine or vaccine inquiry.
Available 9AM-5PM ET Monday to Friday; excluding holidays.
Submit a medical question for a Pfizer medicine or a vaccine.
The submission will be reviewed during our standard business hours.
To report an adverse event related to a Pfizer product and you are not part of a clinical trial* for this medication, click the link below to submit your information:
Pfizer Safety Reporting Site
*If you are involved in a clinical trial for either product, adverse events should be reported to your coordinating study site.
If you cannot use the above website to report an adverse event related to a Pfizer medication, please call (800) 438-1985.
You may also contact the U.S. Food and Drug Administration (FDA) directly to report adverse events or product quality concerns either online at www.fda.gov/medwatch or by calling (800) 332-1088.