<<Disclaimer: Verify this information before applying it to your situation.>> I emailed my questions to Morton (from their website). They sent the following reply: >Thank you for contacting Morton Salt. > >Your request was given to our Food Technologist for response. > >"Calcium silicate does not contain gluten or prolamin. Our table salt line >is not contaiminated by gluten or prolamin containing ingredients. Our >table salt products are gluten and prolamin-free." > >We hope this answers your concerns. > >Sincerely, > >MORTON SALT > >Rose Magdziarz >Consumer Affairs I thought this was a great response. Carl