This last time, I inadvertently quit coffee for the first few days of withdrawal (I was just too sick and wrecked to be bothered to brew any up) and I realized in retrospect it ultimately probably contributed to feeling even *worse,* since caffeine withdrawal is such a doozy on its own. I guess it depends on what your caffeine habit was like pre-withdrawal...for me, going from a pot of day to zero is practically worse than withdrawal from the booze, so both at the same time is pretty godawful, and I probably would have felt better having at least some caffeine. But you certainly know your body best...! And of course caffeine is never a substitute for lots and lots of water.