Champix

Black Box Warning

Generic: varenicline

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Information reviewed July 24, 2026

Rank #8 in NZ TV Ads
Class: Nicotinic Receptor Partial Agonist

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What is it for?

Champix is a prescription medication in New Zealand that helps adults quit smoking by reducing cravings and the pleasurable effects of cigarettes. It is one of the most effective smoking cessation aids.

Primary Condition

Smoking cessation

How it works

Varenicline partially activates nicotine receptors in the brain, reducing withdrawal cravings, while blocking the rewarding effects of nicotine from cigarettes. This dual action makes smoking less satisfying while managing withdrawal.

Common Side Effects

This is not a complete list of side effects. Always consult with a doctor.

  • Nausea
  • Sleep disturbances
  • Headache
  • Mood changes
  • Abnormal dreams
  • Serious neuropsychiatric events

Champix FAQs

What is Champix used for?

Champix (varenicline) is a prescription medication used to treat Smoking cessation. Champix is a prescription medication in New Zealand that helps adults quit smoking by reducing cravings and the pleasurable effects of cigarettes. It is one of the most effective smoking cessation aids.

How does Champix work?

Varenicline partially activates nicotine receptors in the brain, reducing withdrawal cravings, while blocking the rewarding effects of nicotine from cigarettes. This dual action makes smoking less satisfying while managing withdrawal.

What are the common side effects of Champix?

Commonly reported side effects of Champix include Nausea, Sleep disturbances, Headache, Mood changes, Abnormal dreams, and Serious neuropsychiatric events. This is not a complete list — tell your doctor or pharmacist about any side effects you experience.

Does Champix have any serious warnings?

Yes. Champix carries an FDA Boxed Warning — the agency's most serious safety warning. Read the full prescribing information and talk to your doctor about the risks before starting or changing treatment.

What is the generic name for Champix?

The active ingredient in Champix is varenicline, which belongs to a class of medicines known as Nicotinic Receptor Partial Agonist.

Who makes Champix?

Champix is manufactured by Pfizer. It was first approved in 2006.

How can I save money on Champix?

You may be able to lower the cost of Champix by using a free pharmacy discount card or by comparing prices across pharmacies before you fill your prescription. Savings vary by pharmacy and location.

Common questions about Champix

Other Smoking Cessation medications

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Quick Facts

Manufacturer

Pfizer

Year Approved

2006

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