"When interviewing pharmaceutical sales representatives, employers are looking for candidates with expert sales skills accompanied by a strong knowledge of pharmacology. Expect to answer a mix of technical questions about the uses and effects of different drugs as well as sales questions how you would go about marketing them to doctors. Although not mandatory, receiving certification as a Certified National Pharmaceutical Representative (CNPR) will ensure you walk into interviews with a competitive pharmacological background."
Tell about the time when you had to sale a product to someone who didn't know you.
I though this was a very elementary sales question. Any outside sales job is about prospecting potential clients through market research, obtaining meetings, and professionally pitching your product in ways that solve a prospects problem. I referred to a time I sold services to an entire board of directors. Perhaps I made it too difficult for a 3 minute response.