Before the interview, spend time thinking about the products you've marketed and select one that you're very comfortable discussing. The goal here isn't to give a sales pitch, it's to prove that you can convey information to an audience who might not have any knowledge about the product you're discussing.

"Last year I marketed a new software program for medical students to help them keep track of their clinical rotations. Since they rotate through many different specialties, it can be difficult to remember the names of the physicians they meet, the diseases they encounter, and other specifics from each experience. The software was developed to organize the experiences in an efficient way, guiding the students through a series of questions. It even includes an option to export the relevant information from each experience into a resume. The main goal of the product was to offer a time-saving solution to medical students who are typically extremely busy and might otherwise not prioritize keeping good records and notes of their clinical experiences."