This document discusses the role of drug regulatory affairs personnel in liaising with regulatory agencies like the US FDA. It provides background on the FDA, including that it is responsible for food, drug, medical device and cosmetic safety. It also outlines some FDA initiatives to expedite drug approval processes, such as alternative pathways. Finally, it stresses that regulatory professionals must be aware of FDA guidance documents and recommends experience liaising with global regulatory agencies through meetings and courses to aid new product development.