I have read the amazing liver and gallbladder cleanse by Andreas Moritz . He tells you of the many symptoms of having a liver with stones in it. (most of us by all accounts) anyway sciatica was one of the symptoms.
I have flushed 10 times and passed 5 cups of stones. when I have just done a flush and I get some slight pain in my gallbladder area and maybe some indigestion,I take Epsom Salts and it always clears it for me. ALWAYS. dR CLARK SAYS that Epsom Salts opens your bile ducts. I belive it dose. Ive read her book as well ( The Cure For All Diseases ) I recommend these books if you want to know more.