Hang Over Preparation Drink

Seems like an oxymoron eh?  Hangover Preparation...Unfortunately my customer found this in the convenience store and purchased enough for our entire group at 7PM.  Guess he had plans of drinking the night away and this was his way of informing us of this fact. 

I've tried variations of these before and not been that impressed.  I fired one down a year or so ago before retiring for the evening and spent most of the night laying in bed with what I consider to be a massive caffeine high.  I've avoided them since.  To me they taste very similar to a Red Bull.