Any prescription deemed a controlled substance is tightly regulated and anything remotely using the word "transfer" will not occur with that prescription controlled substance. To get the script refilled near your college you would have to get a new script for your Ambien. Same goes for when you are home from college and need to refill that script you would then have to get a new script for the local pharmacy. The is no if, and, or but's. It's just the way the law is.