So far after two days, my baby is sleeping more and crying a lot less. Nutramigen is proving to be a great product. We worked it out as far as cost goes, and it's about $300 a month for 0 - 3 months, and when babies start to eat more and if you keep the baby on it, it's about $600 a month. We are having problems finding this product as well. Wal-Mart doesn't have it, at least where I've been. London Drugs has it but they only have it in the ready-made. The powder comes in a very small can (if you can find it) and it's about $19.00 Canadian, and lasts for 3 days. These are the only downsides to this wonderful product. But it's worth it, because my baby is happier!!!!