It’s finals week; you’ve been studying in the library for a good six hours and feel your concentration slipping away. The numerous coffees and Redbulls you’ve consumed haven’t helped either. A friend of yours uses Adderall to help him study, and you’ve taken it before as well. Desperate to focus, you call him up and buy a few tablets that will last you the week. This is a common case of prescription drug abuse on college campuses.