I don't get heartburn often, pretty much only with sausage and hot dogs, sometimes other foods affect me but I can't think of any specific ones at this time. I only have a problem with diarrhea when I eat any spicy foods. As for being lactose intolerant, I'm not sure. I have sometimes wondered if I am. I have recently started to notice that a lot of times after eating cheese or drinking milk, I get a bit gassy, but I'm not sure if that is a sign of being lactose intolerant. Thanks again for any help