i had a Liver Flush once and had absolutely no pain. I did feel quite nauseous and weak half of the night and in the morning before i flushed my intestines with water (enema)(i hadn't taken any Epsom Salts and didn't eat for prior three days to the flush, just apple juice). i passed about 50 stones of different size(some were about half an inch), i felt quite weak for a day after and then everything went back to normal. Before the flush a had had a bad pain in my GB area for 3 days in a row which went away after a flush. I look forward to doing it again soon.