Correct me if i'm wrong, but this drink doesn't contain 1,100mg of caffeine. Thats enough to cause some severe side effects.. i believe it's actually 280mg. As far as stating that a starbucks coffee contains 1,100mgs i believe that's wrong too. Thats somewhere in the region of 300mgs too. I might have made a mistake, but i'm pretty sure i'm correct. Hope that clears some things up.