My mother-in-law was cured of terminal liver cancer back in the 70's at Dr. Kelley's clinic (that was of course, ultimately shut down by our government). She swears by Dr. Kelley's basic protocol for Liver Flushes (grin, of course :)
Here's what Dr. Kelley wrote (the rest of his basic protocol and other good ones, can be found at the top of this forum by clicking the Liver Cleanse/Flush Recipe link):
*** Go Immediately to Bed, "face down." Pull your right knee fully upwards, towards your right shoulder. A pillow under your left shoulder will help. Now relax into this position, and then shift your weight to your right side. Keep your right knee held fully upwards, to your chest. Using a TIMER, hold this position for 30 minutes. (You can briefly stretch your right leg, if necessary.) Gall bladder contractions and expulsion of stones will occur at this time. These can often be felt and heard. Optional, but helpful: Massage your gall bladder with your finger tips, up under your right ribs. After 30 minutes - relax, stretch out, and go to sleep. ***
Of course, as always, listen to your body and change/alter things to work for you.