The Common Technical Document (CTD) was designed to provide a common format between Europe, USA, and Japan for the technical documentation included in an application for the registration of a human pharmaceutical product. The CTD dossier is divided into five main modules: Module 1 – Administrative information and prescribing information; Module 2 – Overviews and summaries of Modules 3–5; Module 3 – Quality (pharmaceutical documentation); Module 4: Non-clinical reports (pharmacology/toxicology); Module 5: Clinical study reports (clinical trials). Detailed guidelines are provided describing the content of each module and the majority of submissions must now follow the CTD format for submission dossiers.