Anna is smiling and giggling now. For the past two weeks she has been a happy baby! I think we have finally found a formula that agrees with her. She was so cranky before and never happy. Maybe her tummy was hurting...poor thing. I don't like that they can't tell you those things. I so wish she could talk! This formula is thinner and more broken down than the others, so she has been waking up during the night hungry. Usually 3-4 am. We were doing so good there for awhile sleeping through the night. But I can't complain. I will take happy baby and tired mom over cranky baby and rested mom.