
Champix is a medicine to help adults stop smoking. It can help to reduce craving and withdrawal symptoms that happen while you give up smoking.
Champix works by blocking the effects of nicotine in your body. There are receptors for nicotine in the brain. When cigarette smoke is inhaled, nicotine attaches to these receptors. This sends a message to a different part of the brain to release a chemical called dopamine. Dopamine gives a feeling of pleasure which only lasts for a short time. The body wants to repeat this feeling reinforcing the need to keep smoking. Based on research, it is believed that Champix works by activating these receptors and blocking nicotine from attaching to them.
You will normally need to take Champix for 12 weeks. Your doctor may advise you to take Champix for a further 12 weeks after your first treatment. This may increase your chances of stopping in the long term.
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