In recent decades, the elderly population in Brazil has grown rapidly, as has concern for the health of this population. Institutionalization in nursing homes has appeared as an alternative form of health care for frail elderly that live alone. The present study evaluated the pharmacotherapy and inappropriate drug prescriptions for institutionalized elderly patients living in long-term institutions in southeastern Brazil. This research was conducted at five institutions with a total sample of 151 individuals aged at least 60 years. Databases were used to identify drug interactions, defined daily dose and inappropriate prescriptions. The prevalence of drug intake among the elderly was 95.36%, and there were an average of 3.31 ± 1.80 drug prescriptions per individual. Based on Beers criteria, the prevalence of inappropriate prescriptions was 25.83%. In addition, 70.2% of prescriptions were prescribed at a higher dosage than the defined daily dose (ATC/WHO). Potential drug interactions were identified for 54.11% of prescriptions; 81.42% of these were of moderate severity. The main inappropriate drugs were prescribed for cardiovascular and nervous system problems. Institutionalized elderly individuals presented a high consumption and misuse of medications, requiring professional intervention to monitor prescriptions and improve the quality of service for this population.Uniterms: Pharmacoepidemiology. Drug interactions. Beers criteria. Elderly/inappropriate use of medicines. Medicines//inappropriate use.Nas últimas décadas, o número de idosos no Brasil cresceu rapidamente, bem como, a preocupação com a saúde desta parcela da população. Neste cenário, a institucionalização em casas de repouso aparece como uma alternativa para os cuidados com a saúde dos idosos debilitados ou que vivem sozinhos. O presente estudo avaliou a farmacoterapia e a prescrição inadequada para idosos que residem em instituições de longa permanência no sudeste do Brasil. Esta pesquisa foi realizada em cinco instituições, totalizando uma amostra de 151 indivíduos com idade a partir de 60 anos. O banco de dados foi analisado para identificação de interações medicamentosas, dose diária definida e critérios de Beers. Dentre os indivíduos avaliados, 95,36% consomem algum tipo de medicamento, sendo 3,31 ± 1,80 medicamentos prescritos por indivíduo. Com base nos critérios de Beers, a prevalência de prescrições inapropriadas foi de 25,83%, sendo também encontradas 70,2% das prescrições com doses superiores à dose diária definida (ATC/WHO). Interações medicamentosas potenciais estavam presentes em 54,11% das prescrições, sendo 81,42% com grau moderado de gravidade. Os principais medicamentos inapropriados foram prescritos para problemas cardiovasculares e do sistema nervoso. Os idosos institucionalizados apresentam alto consumo e uso inadequado de medicamentos, sendo necessária a intervenção profissional para monitorar as prescrições médicas e melhorar a qualidade do serviço de distribuição de medicamentos a esta parte da população.Unitermos: Farmacoepi...

Controlled release systems can modify the release rate of drugs and direct them to specific sites of action, making them more effective and/or reducing the adverse effects. The objective of this study was investigated, poly(β-hydroxybutyrate) (PHB) and poly(ε-caprolactone) (PCL) nanospheres to improve the delivery of Simvastatin (SIM). Nanospheres were prepared by the emulsion/evaporation technique of the solvent, varying the amount of SIM added. The SIM quantification was performed using a validated high-performance liquid chromatography method. The average diameter and PDI of formulations without SIM were lower 250 nm and 0.3, respectively. Nanospheres containing 30% of SIM showed values of 265 nm and 0.09, respectively. The average zeta potential was -31.8 mV, suggesting the predominance of repulsive forces that prevent aggregation. In vitro release suggest transport occurs by diffusion. Morphological analysis demonstrated spherical particles and rough surfaces. In conclusion, data suggest that PHB/PCL nanospheres are promising delivery systems to SIM.