The most expensive drugs are “specialty drugs,” but no one has defined exactly what they are. They are generally the drugs that fit into one or more of the following categories: 1. the manufacturer put a high price tag on the drug; 2. the drug treats a complex, chronic, or rare condition; and /or 3. The drug requires special handling, storage, or administration. There is no doubt these types of drugs are in high demand because they deliver life-saving and life-enhancing treatments for many people.