Prescription onlyNo lower cost generic available

Chantix

(Varenicline)

  • Pill
Back to: Full Site NavigationSkip to: side effects sectionSkip to: What to expect sectionSkip to: Risks and warnings sectionSkip to: Tips from users and pharmacists

Helps you quit smoking.

Skip Upsides & Downsides section. Skip to side effects section.
Prescription onlyNo lower cost generic available

Our pharmacists’ bottom line

Chantix (Varenicline) is a great way to help you quit smoking and stay off cigarettes, even though many people have nausea with it.

  • 44% of people taking Chantix (Varenicline) were able to quit during their initial 12 week treatment.
  • Quitting smoking can significantly lower your risk of lung cancer, heart disease, and stroke.
  • An occasional slip-up doesn't mean you have relapsed.
  • When you quit smoking, your food might taste better and your breath won’t smell like smoke.
  • You'll save a lot of money when you stop buying cigarettes.
  • You can have withdrawal symptoms like irritability and difficulty sleeping once you stop smoking.
  • Patients taking Chantix (Varenicline) can gain weight if they substitute smoking for food.
  • Changing your daily smoking patterns and keeping yourself busy can be difficult at first.
  • Rarely, some people have had suicidal thoughts while taking Chantix (Varenicline).
  • Smoking can affect how some drugs work in your body. Once you quit, your doctor may need to adjust the doses of certain medicines you're taking.

Save on your next Chantix (Varenicline) prescription

Be sure you’re getting the lowest price for your medication, even if you have insurance.

Skip side effects sections. Skip to What to Expect and Pharmacists Tips section.

Side effects for Chantix (Varenicline)

From clinical trials of Chantix / Quitting smoking 

  • Any side effectAny side effect12% for Chantix vs.10% for placebo
  • NauseaNausea3% for Chantix vs.1% for placebo
  • Abnormal dreamsAbnormal dreams3% for Chantix vs.2% for placebo
  • Sleep difficultySleep difficulty1% for Chantix vs.1% for placebo

What to expect when you take Chantix (Varenicline)

Skip what to expect section. Skip to Risks & Warnings section.
Tips from our pharmacists
  • Plan a quit date with your doctor and then start taking Chantix (Varenicline) 1 week before that date. Starting Chantix (Varenicline) before you quit helps build up the medicine in your body while you are still able to smoke a few more days.
  • Be sure to tell your doctor if you have depression or mental health problems.
  • Sign up for the easy-to-use GETQUIT Plan included in your Chantix (Varenicline) starter pack for strategies to keep you off cigarettes.
  • You should always take Chantix (Varenicline) with food and a full glass of water to reduce side effects.
  • The most common side effect is nausea, which can make you feel like you are going to throw up.
  • Quitting is hard. If you slip-up and have a cigarette, don’t give up. You can still keep taking Chantix (Varenicline).

Risks and Warnings for Chantix (Varenicline)

Skip Risks and Warnings section. Skip to Tips section.
    • Higher risk if:
    • History of depression
    • History of bipolar disorder

    Chantix (Varenicline) can increase the risk of suicidal thoughts or behavior. Watch for any unusual changes in mood or behavior including depression, agitation or hostility, especially during the first few months of treatment or when the dose changes. Report anything concerning to a doctor immediately.

    This is a black box warning. The FDA requires this warning when there is a significant risk of serious or life-threatening effects that anyone taking the drug should consider.

Means that some groups have a high risk of experiencing this side effect

Tips from pharmacists and people taking Chantix (Varenicline)

Final section. Do you want to return to drug navigation?
The FDA category for this medication is C. It is advised that you: Weigh risks vs. benefits
Pregnancy
Alcohol
  • Risks from our pharmacists
  • Chantix (Varenicline) has been shown to increase the effects of alcohol, including aggressive behavior followed by forgetting what happened. Decrease the amount of alcohol you consume until you understand how Chantix (Varenicline) affects you.
Food
  • Upsides and downsides from our pharmacists
  • Patients taking Chantix (Varenicline) can gain weight if they substitute smoking for food.
  • When you quit smoking, your food might taste better and your breath won’t smell like smoke.
  • Tips from our pharmacists
  • You should always take Chantix (Varenicline) with food and a full glass of water to reduce side effects.
Sleep
  • Upsides and downsides from our pharmacists
  • You can have withdrawal symptoms like irritability and difficulty sleeping once you stop smoking.
Weight gain or loss
  • Upsides and downsides from our pharmacists
  • Patients taking Chantix (Varenicline) can gain weight if they substitute smoking for food.