Regarding liver flushes. I use the standard Hilda Clarke flush as found on curezone. Nothing funny or exotic added.
Would HIGHLY suggest a good parasite cleanse leading up to it, and also ensure the bowel is evacuating regualry ie at leats daily before trying.
May well be that you are more in need of it than you think, keep reading and go with what you believe to be an informed decision.
Incidentally, I know the Barefoot Herbalist makes a great liver cleanse formuale, that makes Liver Cleanses much easier. Its all experiemntal stuff of course, but using it depends upon what you feel you want to achieve and are prepared to experiment with.
The liver cleans eis paramount to getting the blood stream clean again. the colon will take longer, but with these two up and running your symptoms will practically vanish over night, assuming you dont go back to pizza and such like, in an all out attempt to poison the body.