This document reflects the position of the Spanish Association of Biosimilars (BioSim) regarding the innovation that biosimilar medicines bring to the pharmaceutical environment and to the National Health System. It has been coordinated by the Dr. Gonzalo Calvo (Clinical pharmacologist at the Hospital Clinic of Barcelona). BioSim has had the advice of the following experts: Luisa Amoedo (plant manager, mAbxience), Pedro Gomez Pajuelo (General Secretary of the National Transplant Organization of the Ministry of Health, Social Services and Equality), Alvaro Hidalgo (Lecturer in Economics and Health at the University of Castilla-La Mancha), sun ruiz (Head of the Division of Biological Products, Advanced Therapies and Biotechnology, Spanish Agency for Medicines and Health Products. Ministry of Health, Social Services and Equality), Serrano Shell (Head of Corporate Affairs, Health and Value, Pfizer), felix wolf (Emeritus Professor at the Carlos III University of Madrid. Department of Economics).