Hi everyone, I'm new here. Have had IBS for many years. I saw that many people in the forum had talked about the benefits of lactaid and wondered if anyone else had experienced a profound and horrible reaction to it? I am talking about explosive diahrrea and vomiting that lasted for up to 6 hours and left me dehydrated and sore for a couple days. The lactaid company says that an allergic reaction to their product is not possible. I had this experience three times and have never touched the stuff since.