I believe it's rather common to feel weak and tired after a liver flush. i think the liver is a bit shocked after a Liver Flush and needs a few days to bounce back. this is my perception anyways. perhaps some liver supporting herbs would be wise also perhaps minerals and electrolytes have been depleted due to the flush. i love emergenc to replenish electrolytes. i'm sure you will feel better soon. congrats on 11 flushes. oh also pain may be relieved by a dose of Epsom Salts .