Enfamil Gentlease

Have any of you tried Enfamil Gentlease, and would you recommend it for gassy babies? My LO has been on Enfamil Newborn for the past month (she is a month old) and her poor tummy rumbles and she has the worst hiccups and gas, to the point of spitting up and occasionally vomiting. I have tried gas drops, gripe water, I burp her before, mid and after feedings, and nothing else seems to work.