Adherence to medication before and after the use of a Drug-Dispensing System with usage control

The aim of the present work was to assess the adherence to medication from polymedicated patients before and after the use of a Drug-dispensing System with Usage Control (DDSUC) and compare the levels of the clinical parameters - blood pressure, postprandial glycemia, glycated hemoglobin, triglycerides and cholesterol. DDSUC consisted of a monthly drug-dispensing package, in the shape of a blister with a calendar. This quasi-experimental study was performed in a Basic Health Unit. Twenty four patients were selected to use DDSUC for 4 months. Medication adherence was assessed through Morisky-Green test. Among the participants of the study, 62.5% were women and the average age was 67 years old. Before the use of DDSUC, 83.3% of the patients were considered as "less adherent". After the use of the system, 100% were considered as "more adherent" (p < 0.01), the means of the systolic blood pressure decreased 23.7 mmHg (p=0.000), the diastolic blood pressure decreased 12.1 mmHg (p=0.004) and glycemia diminished 79.3 mg/dl (p=0.000). The use of DDSUC improved the adherence to medication and decreased the values of the clinical parameters, making patients safer when it comes to respecting the correct use of their medication.