Are the CORE shakes gluten free and Non-GMO? Are the CORE shakes gluten free and Non-GMO? Can I mix the powder with anything other than water? What is TruCELLE? Posted by Joe Jerde on June 16, 2014 in Yes, the CORE protein shakes are gluten free and verified GMO (genetically modified organisms) free. Tags:core protein shake, gluten free, non gmo Share this article: About Joe Jerde I'm an entrepreneur looking forward to meeting new people and helping them become successful in building their own business!