This document provides an overview of drug regulatory affairs. It defines regulatory affairs as the profession that acts as the interface between pharmaceutical industries and drug regulatory authorities. The goal of regulatory affairs professionals is to protect human health by ensuring safety, efficacy and quality of drugs and ensuring accurate product information. It discusses why regulatory affairs is needed, highlighting past drug tragedies that led to increased regulation. Regulatory affairs helps reduce development failures and provides assistance on issues like licensing, registration, development, manufacturing and quality guidance.