Green stools scream cows' milk protein allergy to me. It could be a foremilk-hindmilk imbalance though. I'd bet allergy and remember that it takes two to three weeks for dairy to clear the system (and this means ANY cow dairy product disguised as casein, whey, lactose--even though they are not all protein--just the casein is). Also, between 50-80% of babies who react to cows' milk also react to SOY. The worst solution is putting baby on formula. If it is a fore/hind milk imbalance, make sure mom is "finishing the first breast before switching." : )Chris Hafner-Eaton, PhD, MPH, CHES, IBCLC email: [log in to unmask] : ) : )HSR & Health Educational Consultant voice/fax: 541 753 7340 : ) : )------------**CHANGE THE WORLD, NURTURE A CHILD!**------------------ : )