BioSim has organized, in collaboration with the Spanish Patient Forum (FEP), the Information Day "Biosimilars: quality, safety and efficiency". An initiative whose purpose is to train and inform patients about biosimilars and resolve any doubts that may arise. This Conference is divided into two training videos. The first presentation "biosimilars: an opportunity for patients" by Fernando de Mora, professor of Pharmacology at the Autonomous University of Barcelona, ​​takes a tour of the general concepts of biosimilar medicines.