There are three main types of packaging – primary, secondary, and tertiary – and it is important to understand that all levels of packaging serve specific purposes with specific requirements, in order to get products to people safely, efficiently, and consistently. Primary packaging is what directly encases and contains the drug product. Secondary packaging is the exterior packaging of the primary packaging that groups packages and further protects or labels the drug product. Tertiary packaging is used for bulk handling, storage, and distribution. An example of these packaging levels in the pharmaceutical industry are a vial or blister (primary packaging) placed into a carton (secondary packaging), then packed into a shipping case (tertiary packaging). This article will focus on secondary packaging and the importance of selecting a supplier who is well equipped to handle a product’s unique and customized packaging needs.