The study is observational, retrospective and monocentric, and aims to evaluate patients who performed an initial pneumological examination at the Anti-Smoking Center of the National Institute Regina Elena tumors due to smoking cessation in the reference period. To such patients, affected of moderate or severe tobacco use disorder, drug therapy was prescribed with Cytisine 1.5 mg, with the aim of evaluating treatment adherence, efficacy and tolerability of Cytisine as monotherapy in the treatment of moderate or moderate tobacco use disorder serious. Responding patients will be taken into consideration for the study consecutively to the criteria established and pertaining to the Anti-Smoking Center of the National Cancer Institute Regina Elena in the period between 02/01/2023 and 11/30/2023 on first and subsequent visits controls.
