How big is 'very, very big'??? Did your surgeon tell you this or did you see them yourself. I still am flushing after my gb was removed last year. My liver is very congested. I have passed over 1500 stones in 8 flushes and will continue to do monthly flushes or so until June of next year. The largest liver stone I have passed has been over an inch around, like a small walnut. Painless passage though due to the Epsom Salts .