<<Disclaimer: Verify this information before applying it to your situation.>> Hello Everyone, I have had several inquiries about my comment about citric acid being the culprit in my husband's problem with Jamba Juice smoothies. The reason that we determined that it was probably the citric acid was that it was the only ingredient in the smoothie that it could be. The smoothie contained various fresh fruits and the bananas that were processed in another country using citric acid. If you go to www.celiac.com and bring up the Safe Additives List, you will find that it says that Citric Acid made in the USA is GF. There is an asterisk after this comment and the explanation is as follows: "All the citric acid in the US is made from corn. Outside the USA the acid can also be derived from other sources of dextrose, including cane sugar and wheat. Some of the citric acid used in the US is imported from other countries, such as China. Imported citric acid may be made from corn, sugar or wheat. USA made citric acid capacity remains stable. There are three domestic producers of citric acid -- Archer Daniels Midland, Cargill, and Haarmann & Reimer -- with total capability of 460 million lb/yr of citric acid. All three produce citric acid through the fermentation of corn-based dextrose." Also, another listmember advised that the Jamba Juice in the Bread & Circus in Cambridge, Mass. uses soy milk sweetened with barley malt. It was not mentioned which of their products include this ingredient. Hope this helps. Barbara in Illinois