Yesterday my son cane down with flu symtoms and needed a solu-cortef injection.  I have always just carried one vial with me when we would go somewhere.  We use the lu-Cortef Act-o-vial.  When I tried to push the stopper down into the vial, it became stuck and would not mix.  I just kept thinking, what if I had been out and this was all I had.  From now on I will carry 2 vials.