Today, no doubt that insufficient adherence to the treatment of chronic diseases is the main reason for reducing the effectiveness of the treatment, developing complications of the underlying disease, reducing the quality of life of patients and, consequently, increasing the cost of treatment [6]. Research has shown that longterm adherence to any treatment of any disease does not exceed 50% [2]. In a series of studies conducted on adherence to treatment, it was shown that the degree of adherence ranged from 43-78% [3,5,10,11]. It has been established that 1/3 of the patients discontinue the recommended treatment within 12 months after a cardiovascular event. Wherein, low treatment adherence was associated with a significant increase in the risk of cardiovascular complications [1,3,4,7,8]. Adherence to pharmacotherapy depends on many factors. One of the factors that may play an important role in assessing adherence is the patient's behavioral characterization.Taking into account the above-mentioned data, the purpose of this study was to investigate the degree of adherence to treatment in patients depending on their type of temperament.