Chantix

(varenicline)

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Helps you quit smoking.

Skip Upsides & Downsides section. Skip to side effects section.

Our bottom line

Chantix (varenicline) is a great way to help you quit smoking, but you can run into more problems with it compared to other alternative aids.

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  • Lowest price with coupon
    $406.99
Quick facts about Chantix
  • Drug class: Respiratory
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Upsides

  • Chantix (varenicline) improves your long-term chances of quitting smoking.
  • Doesn't cause weight gain unlike some other aids that help you quit smoking.
  • Safe to use if you have kidney or liver problems.
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What to expect from Chantix, on one page

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Downsides

  • Can cause more nausea and mood side effects than other aids that help you quit smoking.
  • Can't use other aids that help you quit smoking while you're on Chantix (varenicline).
  • Chantix (varenicline) is prescription only, but most other aids that help you quit smoking aren't.
  • Drinking alcohol and using Chantix (varenicline) can cause you to be more drunk than usual.
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What to expect from Chantix, on one page

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How it works

Chantix (varenicline) is a smoking cessation medicine (helps you quit smoking). It binds more strongly to the same receptor in the brain as nicotine does but causes a much weaker effect, which lowers nicotine cravings and prevents withdrawal symptoms.

Quick facts about Chantix
  • Drug class: Respiratory
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Used for

Dosage forms

  • Pill
Tried Chantix? Write a review!

Prices and coupons

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What to expect when you take Chantix (varenicline) for Quitting smoking

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  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Possible side effects
  • Nausea
  • Gas
  • Headache
  • Constipation
  • Trouble sleeping
  • Abnormal dreams
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Side effect rates for Chantix (varenicline)

From 1626 clinical trials of Chantix when taken for quitting smoking (1 mg twice a day)
  • Nausea
    30%30%
    10%10%
  • Trouble sleeping
    18%18%
    13%13%
  • Headache
    15%15%
    13%13%
  • Abnormal dreams
    13%13%
    5%5%
  • Constipation
    8%8%
    3%3%
  • Stomach pain
    7%7%
    5%5%
  • Fatigue, discomfort, lack of energy
    7%7%
    6%6%
  • Gas
    6%6%
    3%3%
  • Dry mouth
    6%6%
    4%4%
  • Upset stomach
    5%5%
    3%3%
  • Vomiting
    5%5%
    2%2%
  • Sleep disorder
    5%5%
    3%3%
  • Abnormal sense of taste
    5%5%
    4%4%
  • Airway problems above the lung
    5%5%
    4%4%
  • Sleepiness
    3%3%
    2%2%
  • Rash
    3%3%
    2%2%
  • Bigger appetite
    3%3%
    2%2%
  • Smaller or no appetite
    2%2%
    1%1%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of Chantix.

Chantix (varenicline)
Placebo

People taking Chantix felt side effect more

People taking Chantix felt side effect less

No difference

Risks and Warnings for Chantix (varenicline)

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    • Higher risk if:
    • History of depression
    • History of bipolar disorder
    • Use of alcohol

    Chantix (varenicline) can raise the risk of suicidal thoughts or behavior. You might experience nicotine withdrawal, which can cause changes in behavior, including depressed mood. Alcohol use while on Chantix (varenicline) can make these effects worse. Watch out for any unusual changes in mood or behavior including depression, agitation, or hostility, especially when you first start taking Chantix (varenicline) or when your dose changes. Stop Chantix (varenicline) and tell your doctor right away if you experience any of these changes.

Common concerns from people taking Chantix (varenicline)

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Alcohol
  • Limit alcohol use as Chantix (varenicline) can change alcohol's effect on you.
  • Drinking alcohol and using Chantix (varenicline) can cause you to be more drunk than usual.
Food
  • Take Chantix (varenicline) with food and a full glass of water.
  • Worth it
    Some hassle
    Reviewed Chantixon 10/11/2017The upset stomach is usually avoided with food intake and water. Sleeplessness is not due to not being able to sleep but short increments. Still felt rested
    43
    Woman
    A month or so
    Smoking cessation assistance
Kidneys and liver
  • Safe to use if you have kidney or liver problems.
Weight
  • Doesn't cause weight gain unlike some other aids that help you quit smoking.