There has been a great deal of discussion regarding caffeine in general. For instance, sources of caffeine, coffee and chocolate in particular, have had varying discussions and the end result is “to have or not to have.”
The bottom line for fibromyalgia and the overlapping conditions, such as interstitial cystitis (a painful bladder disorder), irritable bowel syndrome, migraine, etc., is to use an elimination diet process. Start by eliminating various caffeine sources from your diet. Do it one at a time and try it for at least a week. If you start to feel better….BINGO! To determine if one source in particular might be the culprit, add each one back into your diet. If you feel worse, then you know to avoid it.