If she is allergic to oranges it would not have mattered if they were organic or not. It is the citrus food itself she is allergic to, not how it is grown. If she was allergic to fertilizers or additives, then organic foods may benefit. Suggest going to an Allergist and getting her tested completely so you know exactly what to feed her or not.
I did not have her tested for the Pediasure. Things that have been known to bother her are oranges and carrots.
It depends on what the person is allergic to. What exactly is she allergic to in the Pediasure and the other food allergies? Thank you.