Yes it was strange - the guy did it because he killed a couple of patients inadvertently with a compound that he had made which was not done under aseptic conditions. It must have taken some time because these are not fast acting. Maybe he wanted time to think about it first - who knows?!?

I was on a fairly high dose rate of fentanyl and took tons of Diflucan. There are possible drug interactions with almost everything and I think the point here is to be as cognizant as possible of any changes and report them to a docotr immediately. The risk has to be balanced with the benefits so I wouldn't want to scare people off of fentanyl which is one of the best long term opioids for long term pain management.