In both groups, a doctor and a pharmacist, blind to treatment assignment, will gather information during the stay, discharge and post-discharge, the latter by telephone 30 days after discharge from the ED, in this second interview also verify the existence of a readmission and / or unscheduled medical consultation. In addition, discharge of each patient satisfaction was measured with respect to the service received by a user satisfaction survey applied by external and impartial staff. In addition, two independent trained evaluators (Emergency Medical and Pharmaceutical Chemistry), blinded to treatment assignment, evaluate the background of each case and by consensus allocated the presence of problems related to drugs, and classified as preventable or not preventable, according severity.