Objectives: Pharmacological treatment has been shown to increase success in moderate and high nicotine addicts.Although the success of quitting is even higher with three months of regular treatment, the rates of using the treatment are low.In this study, although it was emphasized that patients should use 3 months of regular treatment, the reasons for not using pharmacological treatment were investigated. Methods: One year after the initiation of smoking cessation treatment, the patients were called at least 3 times, and a questionnaire was conducted with the verbal consent of 281 patients. Results: A total of 277 (%70.1) of 395 cases included in the study were male and their mean age was 41.35 ± 11.6 (18--79) years.When the duration of treatment use of 281 cases was questioned, it was seen that only 108 (38.4%) completed the treatment. Some patients not used the drugs due to side effects of the drugs (30.6%), some patients (20.2%) thought that the medication will not be effective, some patients (19.7%) thought that they weren't ready to quit, some patients (16.2%) thought that they quit smoking already. Considering the rate of quitting after one year, it was found that 33.8% of them quit smoking. Conclusion: Although studies have shown that 3 months of regular pharmacological treatment in smoking cessation treatment increases the success of quitting and decreases relapse, it was found that 61.6% of the patients did not use the treatment for three month.