Arterial Hypertension (AH) is a chronic disease that requires treatment for life. Their control is directly related to the degree of patient adherence to therapy that is indicated to him. Failure to medication adherence is associated not only to the act of taking the prescribed medicines, but also in the way the patient leads the treatment indacations. To identify, evaluate and measure patient adherence to the prescribed treatment, several direct and indirect methods have been developed and used. Direct methods are characterized as the dosage of the active substance/drug metabolite and indirect methods include strategies as questionnaires and interviews, among others. The objective of this review is to identify assessment methods and therapy adherence scales in hypertensive patients.