Clinical trials in the European Union supports the undertaking and oversight of clinical trials in the European Union (EU) and European Economic Area (EEA). It is part of a broad initiative to transform the EU/EEA clinical trials environment in support of large clinical trials in multiple European countries, to the benefit of medical innovation and patients. A clinical trial is a study performed to investigate the safety or efficacy of a medicine. For human medicines, these studies are carried out in human volunteers.