Recognizing the patients believes and attitudes towards their disease and treatment as well as facilitating basic information are essential for a satisfactory compliance. In this respect, and in order to know the state of things, personal interviews were carried out following a pre-established protocol and evaluating the degree of acceptance of information oriented to the outpatient. Two hundred and seven questionnaires were collected. Populations mean age was 50 years, 60% were women and there was a high percentage of illiterate patients or with only primary school level (69.8%), with a medium-low social status (98%). In general, they were aware of the indication of treatment (80%) although 56% of patients did not know the consequences of a poor control of their disease. Seventy eight percent wished to receive more information and 147 (96%) patients preferred the physician as the provider of it. The opinion regarding the information leaflets oriented towards the outpatient was unanimously favorable being the most interesting aspects those regarding the instructions on the use of drugs and adverse effects. The educational level was the factor influencing most significantly the patient's attitude. We conclude saying that in order to carry out a pharmacological treatment educational program it is necessary to evaluate the knowledge, needs and attitudes of the population towards whom it is directed.