Similac Alimentum hypoallergenic baby formula powder with iron - 16 oz (793505)
Designed for babies with colicky symptoms such as excessive crying and fussiness due to cows milk protein sensitivity.
Pricey but worth it...
My baby had a milk protien allergy which resulted in bloody stools. Alimentum got her on the right track in less than 24 hrs. It can definitely break the pocket book though. Just shop around and try to buy in bulk when you can. We're now to the point where she can handle a little soy formula, so we mix half and half. Cuts on some of the cost anyway... good luck with your little one!