Diagnosed Celiac 2011 by blood test and scope, been gluten-free since. Been in severe pain, nausea, passing a great deal of blood. So need to prep for colonoscopy and got Rx for TriLyte with flavor packs (lemon-lime & cherry). Gastro Doc said it was "probably" gluten free. Really? Probably? Asked his Physician Asst. to make sure before I leave so he...