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Zyban tablets contain the active ingredient bupropion hydrochloride, which is a medicine used to help people who are dependant on nicotine to give up smoking. It acts in the brain but is not the same as nicotine replacement therapy.
The recommended starting dose when quitting smoking is Zyban 150 mg, taken once daily in the morning. As soon as the fourth day of treatment, your healthcare provider may increase your dose to Zyban 150 mg, taken twice daily. You should start taking Zyban while you are still smoking, because it takes about a week to build up the required level of the medication in your blood. You should choose a "quit date" - usually some time in the second week you are taking Zyban.
You should take Zyban for at least 7 to 12 weeks. If you have not made any progress toward quitting by the seventh week, your healthcare provider may decide to take you off Zyban. However, if you have successfully stopped smoking, your healthcare provider may decide to keep you on it for several months, as Zyban can help you from starting smoking again.
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