Stock Photo - TREATMENT FOR SMOKING Champix active molecule : Varenicline is a drug recommended in the framework of tobacco withdrawal. Here, a young mother, wanting to quit smoking, is reading carefully the conditions of use of the drug. Champix active molecule : Varenicline is a drug recommended in the framework of tobacco withdrawal date of authorization of commercialization : September 2006, commercialized in France beginning of 2007. It acts as a partial agonist of nicotinic receptors. Here, conditionning of the beginning of treatment : a week of tablets of 0,5 mg of varenicline then a week of tablets of 1 mg of varenicline.