Always mention nursing to a medical provider. Also, you can ask a decent pharmacist about OTC drugs and nursing. I really only worry about meds, smoking/second-hand smoking, and polluted fish. In general, the U.S. public health machine is way too uptight about the food/alcohol/caffeine stuff -- there are good reasons for that (having been part of that machine myself), but you know your own situation best. I remember reviewing a study about caffeine and pregnancy in public health school. The investigators found this big negative impact of caffeine, and it made the news, etc. Well, turns out that they forgot to control for smoking. In their sample, the high caffeine drinkers (and, did I mention, we're talking pretty high doses, not a cup or two of joe) were also smokers (while pregnant!). When they re-did the numbers to include the smoking, the caffeine effect was nil. But did the retraction make the news? No. Docs and such are just desperately afraid of being sued and swing very conservative (unless corporate interests or heavy lobbying is involved, but I won't go there). I always say, moderation, moderation, moderation. Also, sanity, sanity, sanity. Keep yourself healthy and happy, and the kids will be fine.