Turns out I cant handle energy drinks!

So, I've never had an energy drink until recently. I decided to try one because coffee isn't doing what it should do for me. The first 1/4 of the can I felt pretty good. At about half the can I felt jittery and should have stopped. I finished the whole can and I swear I could hear colours and see sounds.
So while it was tasty as heck. My heart literally cannot handle this.