Pain
"I have been prescribed Vicodin 5/500s for over a year due to chronic headaches from a severe sinus problem.  



They work great.  However you have to be careful.  You will build a tolerance over time and need more of them to have the same analgesic effect.



Secondly they are habit forming.  If you are on them for a long time and need to use them often, as I have, you will most likely become addicted.  As I have."