I am a 56 year old male in good shape. I just got home from work. Didn't touch anything I am aware of but I took my workout formula, Cellucor C4 Extreme Energy, in preparation to work out. Within 10 minutes, I suddenly started to itch in my upper body which spread to my legs. I have light hives slightly visible on my torso and inner arms. Feels like 1000 little needles touching my skin. I have taken Benadryl tablet and Ranitidine. I have taken this formula previously with no reaction so not sure of the source of this sudden full body itching.