The thing with sudafed is not that it is in anyway bad for teh baby, it's that it can dry up your milk. It has a drying effect on your bodily secretions - well that's why you want to take it isn't it - and this can include milk. Personally I do take it if sdesperate, but tend to take only one dose a day before bed and not for long - and I still have plenty of milk. Try a search for sudafed under zebra -she has posted lots about it before