My daughter was on Zantac while she was in Special Care. She would often squirm and cry during feeds, and it was thought her feeding discomfort may have been related to a "silent" acidic reflux going on internally - anyway, she was still squirmy whether or not on zantac (she was prescribed it on and off). Apparently Zantac tastes revolting too. The good news is that they DO grow out of reflux, and from memory I think one of the only things that worked was holding her and giving her cosy cuddles until she felt comfortable again.