Introduction: Defining the position of Non-Biological Complex Drugs -- Polymeric micelles -- Liposomes: the science and the regulatory landscape -- Glatiramoids -- Iron carbohydrate complexes: characteristics and regulatory challenges -- Drug Nanocrystals -- Analytical methods for determining the size (distribution) in parenternal dispersions -- NBCD Pharmacokinetics and Bioanalytical Methods to Measure Drug Release -- Low Molecular Weight Heparins, Biological Drugs close to Non-Biological Complex Drugs -- Nanoparticle Albumin-Bound Anticancer Agents -- The EU regulatory landscape of Non-Biological Complex Drugs -- What did we learn? What can we expect in the future? Concluding remarks and outstanding issues.