Funny you should mention the vomiting; Julia had projectile vomiting issues, and I know at least 1 other kid with NS that has as well. Jules was on Prevacid for 3-4 months, and we slowly weaned her off and so far so good. She had an upper GI done and they couldn't find anything wrong, so the docs assumed it was either reflux or a learned behavioral thing (I mentioned in my previous post her issues with eating).
I'm not sure about the gas! We have very little experience with baby food here, we've gone straight to introducing table foods lol It could be the formula, have you tried something hypoallergenic?
Mom to Julia