SIMILAC ADVANCE IS A BAD BABY FORMULA FOR THE BABIES. IT HAS A NASTY SMELL TO IT. I THINK IT MAKE YOUR CHILDREN REAL HYPER. MY YOUNGEST CHILD IS THE ONLY CHILD I HAVE USED THIS FORMULA ON. IT SEEMED LIKE THE OLDER SHE GOT, THE  MORE HYPER SHE GOT. WHEN I DID A RESEARCH ON THE FORMULA IT HAS ALOT OF SUGAR IN  IT. WHEN I FOUND THAT OUT I IMMEDIATELY SWITCHED MY DAUGHTER OFF OF IT.I WOULD NOT RECOMMENDTHIS FORMULA TO ANYONE.THE POWDER IS THE WORST BEACUSE IT SEEMED LIKE THE MORE YOU STIRRED IT,THE MOREI GOT THICKER IT SEEMED LIKE YOU COULD NEVER GET THE LUMPS OUT OF IT ,WHICH MEAN MY CHILD WASN'T...