Sorry to hear of your health issues. That's a bummer. I've only had one energy drink in my life & was shocked when I paid $3 for a can at a convenience store. I don't know if it's always as pricey, but maybe you'll save money by quitting. A can of coffee is a heck of a lot cheaper if you need the jolt in the morning. I can relate to your reliance on caffine, since I drink three cups of coffee in the morning. I've already given up alcohol, drugs & smoking, though. I need at least one vice!