<<Disclaimer: Verify this information before applying it to your situation.>> Hi all, I am new to this list, and to CD. I hope you'll tolerate a few initial questions. Possibly I'll be able to answer them for myself after I learn where to look, and how to interpret what I read. My teenage son has been rather ill - nausea and other, mainly GI symptoms - for about 10 weeks. He had a longstanding diagnosis of IBS, and we were following orders to treat that, but now strongly suspect CD instead - partly on account of some related family history. Medical consult, unfortunately, isn't until next week. As part of a compilation from a few days ago, someone posted that Metamucil causes constipation in Celiacs. Can anyone give me more details on that? Is Metamucil GF? Also, since my son seems to be reacting to a number of foods, we suspect leaky gut. We had thought of Lactaid as a way to possibly keep dairy in his diet for the time being. Is Lactaid GF? Also, are cheeses generally GF? I'm thinking of grocery store "house brand" Meunster cheese, in particular. Also, is Heinz Ketchup GF? How about Kraft Honey Catalina salad dressing? And what's glutamate? It sounds suspicious, but is it a problem? Thanks in advance for any and all information. This list is a great resource! - Lois in Michigan [log in to unmask]