cluster headaches
"Very bad experience/reaction with only half a dose!  1) Did not take away headache. 2) Increase in pain, heavy weight feeling on my chest, shortness of breath, cold sweats.  This med was a nightmare for me!  I felt immediate pain and pressure in head, neck and shoulders.  The worst however was feeling like a one hundred pound weight on my chest.  Additionally, nausea and cold sweats and feeling like I was in big trouble (practically and ER trip)!  Beware of this med, it may not be for everyone!  Will go back to 3 advil and a coke or my fiorocet.  Cure is worse than the disease in this case for me!"