Stress dosing is fine for some things, but when a child is vomitting or has a bug of some sort the stomach sometimes shuts down and can not absorb the meds or Gatorade-type drinks.  This renders the stress dosing as useless whereas the shot goes right into the system and does it’s thing.  Within 20 to 45 minutes we have watched our child go from very ill with a fever of 104% to a normal (albeit energized) child.  I choose the latter.