Objectives: To estimate the prevalence of non-adherence to medication among and to explore the different reasons for drug non adherence among patient in mental health hospital in Taif city.
Subjects and methods:It is a Cross-sectional descriptive study. The study included 255 patients who were following in Mental HealthHospital clinic. The total number was 255 patients, 233 patients were included in the study and 22 were excluded from the study according to eligibility criteria. The tool of the study was a self-administered questionnaire, which consists of three Parts: Demographic data, psychiatric diagnosis and reasons of not take the treatment. Result:Incidence of non-adherence was high (84.1%). The factors that increased the likelihood of non-adherence were absence of job, familial support and health education about medication use in addition to occurrence of side effects. Conclusion: The frequency of non-adherence is relatively high among the patients with psychiatric disorders in Taif city. Prevention strategies should focus on enhancing socioeconomic status (education and employment) and effective health education of patients to enable them to deal with adverse drug effects.