The Systems for Improved Access to Pharmaceuticals and Services (SIAPS) Program proposed a methodology for reviewing lists of essential medicines (LEM) and formularies, with the potential to achieve optimum results in short periods of time and with a minimal investment of resources. The methodology consisted of identifying an expert international pharmacologist with experience in the LEM process and the following procedural steps: Design of an instrument for drafting the proposal, drafting and review of proposal by the expert, and national workshop to review and validate the proposal.
