I had to take a drug test for work and I had to fill out a list of meds I was taking, it came back dirty because of vicodin I was taking, however they called me to ask me questions such as, who the prescribing doctor was their address and phone number, the prescription number, and the name and number of the pharmacy. So if you actually tell them up front the type of meds your are taking, they shouldn't have a problem with it.

I hope that helps