I gave some ebm to some friends for their 3 week old daughter (born at 36 weeks gestation due to the doctor inducing for conveneince, grrrr) who was currently only drinking formula because the mom's on heart medications that are risky in breastfeeding. They gave it to her and she became constipated and fussy, they went back on formula and it got better. Why is this?? Also, it sounds like they are going about 5-6 hours between feedings, is this normal for formula babies? I can't go that long between meals or snacks, myself! They may have gone a long time between feeding my milk as well, though I don't know why because she'd breastfed previous children, she'd know better than that. I have to wonder if she was getting enough because they said they fed nothing but it for 2 days, on each feeding almost 4oz at a time, but there was only 25oz that I gave them. Someone explain this to me?!?! I wanted to make this a regular thing and provide milk for her weekly (she's so tiny, and early, that I didn't want 100% formula going against her too) but now they think breastmilk is bad for her so it won't happen.