My sister was on this to control bladder spasms. Perhaps something similar happens in IBS? And others here have mentioned it helps with pain, so maybe that will help also.

10mg strikes me as a pretty low dose, so it might feel all right.

I was on it MANY years ago for depression (this was before SSRIs) and it was okay. My head was calm, but slightly spacy (no more than usual I guess! ) and the dry mouth I don't remember.

It's good to talk to your pharmacist...and glad your test results weren't dire.

HUGS