Linda
HI I HAVE 2 GRANDSON'S A YR. OLD. THEY TO ARE STILL ON ZANTAC 3X ADAY. NO DAIRY AT ALL FOR YOUR WIFE. HE ALSO MAYBE BE ALLERGERIC TO OTHER THINGS, AS WELL. YOU WOULD THINK W/BREAST MILK THEY WOULD ALL BE WELL, RIGHT// THEY CAN GROW OUT OF IT. GOOD LUCK