This product has been a lifesaver for us. Our daughter is 6 weeks old and has been fussy and gassy since a week after birth. We tried a few different formulas and none of them seemed to work. The special formulas were too expensive to consider.
Then I heard of Similac Sensitive and decided to give it a try. It seemed perfect for her because it is for fussiness and gassiness and is lactose free. Even after the first day we saw a huge difference. She would lay down and sleep after eating and would not scream out in pain. It was amazing. She still spits up a lot but it doesn't seem to bother her.
I am very pleased with this formula and hope that it continues to show the same results. It is also around the same price as all the other formulas. I finally feel like I have my happy baby back.
Update On Feb 16, 2008: I wanted to add that at first we tried the similac sensitive powder, which still added a little to the gas. Later on we tried the ready-to-feed version and she did better on that but it is a little pricey.