Laurie, If a baby isn't getting enough milk at breast and there isn't enough human milk available, I would supplement with ABM. The baby needs protein and other nutrients, not just sugar. I believe this is in agreement with most recent literature. D5W doesn't have enough sugar to do much good if you are worried about hypoglycemia. D10W is too likely to cause a rebound hypoglycemia. The neonatologists in our area are recommending 24 calorie formula for hypoglycemia. Bonnie Jones, RN, ICCE, IBCLC