This good practice consists in implementing an information service specialized in medicines quality within the Social Insurance Fund of Costa Rica’s (Caja Costarricense de Seguro Social – CCSS) Laboratory for Medicines Standards and Quality (Laboratorio de Normas y Calidad de Medicamentos – LNCM) for the benefit of health professionals working in the institution’s services network. The service offers impartial and timely technical and scientific information as an optimum strategy for providing individuals with the specific information they need. It works with databases and specialized sources of information concerning medicines, as well as competent professionals who manage enquiries in line with identified needs. This has significant benefits in terms of providing trustworthy and context-appropriate information that can be used in decision-making, improving patient pharmacotherapy, and encouraging the safe, rational and more efficient use of medicines.