TREATMENT FOR SMOKING. TREATMENT FOR SMOKING Models. The doctor presents a box of Champix to the patient. Champix active molecule : Varenicline Champix 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 white on blue background then a we