Hi Jamie. I was diagnosed with IC before being diagnosed with IBS (both last year). After six months of being on Elmiron for IC, I am happy to say that my symptoms improved quite a bit and I was able to expand my diet to include things I had previously cut out (such as additional fruits).
I actually stay away from soy for other reasons - gas and migraines. I use almond milk to replace soy milk and just tend to avoid recipes that use tofu or soy cheese.
I know I'm not much help with your question, but I mainly just wanted to say hello to another possible ICer. If you don't get any answers here, you might also try http://www.ic-network.com . There are forums with some very helpful people (just like here), and there is even an IBS forum for people with both IC and IBS.
-------------------- Lisa
IBS-A, Interstitial Cystitis, Migraines
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Re: IBS, IC, and soy and fruit
If you don't get any answers here, you might also try 
