<<Disclaimer: Verify this information before applying it to your situation.>>
 
>It occurred to me that perhaps rice noodles might not be made of just rice
>flour.
 
My daugther always had pain in her belly when eating rice noodles ( which
claimed on the package to be only rice flour and water).  I tried to different
brand with the same result.  Since, I just don't give her any.
 
Maybe, writting to the company would be helpful.( Could take a while though
before receiving any answer since the companies are located in China!!).
 
good luck,
Manon