I've decaffeinated so many times---! My secret is Excedrin, the headache remedy with caffeine. So far, I've been without since...Monday afternoon? Yeah, Monday. Had some Excedrin as needed yesterday, er, Tuesday. None Wednesday, and in the wee hours of Thursday, so far I'm okay. I'd worked my way up to 2+ liters a day, which even I think is excessive, and with the money crunch that's about to decend on me, I can't afford that! On the other hand, if I go out to lunch with my mama, sure I'll have a glass of sweet tea with lemon! We go out once a week, I don't think that's so bad....