Smoking (quitting)

Varenicline (Champix)

Source: NHS

In this topic (5)

Varenicline (brand name Champix) is a medication that works in two ways. It reduces cravings for nicotine like NRT, but it also blocks the rewarding and reinforcing effects of smoking.

Evidence suggests it's the most effective medication for helping people stop smoking.

Where to get it and how to use it

Varenicline is only available on prescription,so you'll usually need to see your GP or contact anNHS stop smoking serviceto get it.

It's taken as one to two tablets a day. You should start taking it a week or twobefore you try to quit.

A course of treatment usually lasts around 12 weeks,but it can be continued for longer if necessary.

Who can use it

Varenicline is safe for most people to take, although there are some situations when it's not recommended.

For example, it's not suitable for:

  • children under 18 years of age
  • women who are pregnant or breastfeeding
  • people with severe kidney problems

Possible side effects

Side effects of varenicline can include:

  • feeling and being sick
  • difficulty sleeping (insomnia), sometimes with vivid dreams
  • dry mouth
  • constipationor diarrhoea
  • headaches
  • drowsiness
  • dizziness

Speak to your GP if you experience any troublesome side effects.

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Varenicline (Champix)

Varenicline (brand name Champix) is a medication that works in two ways. It reduces cravings for nicotine like NRT, but it also blocks the rewarding and reinforcing effects of smoking. Evidence sugge