If you are in Europe you can buy the spanish bitter tonic RESIUM, as a pre-cleanse. It is useful for both kidney and gallbladder/liver cleansing. It is a tonic for the softening of stones, a mini-cleanse. You can also grate a piece of fresh ginger (about 2 cm) and squeeze the juice of 1 lemon in a tall glass, 1 tspoon of honey and fill up with hot/not boiling water. Drink it while warm. A true purifier. Dark cherries or dark plums are to be eaten as they are, dried if you cannot get them fresh at this time of year. You should stick to the timetable and the amounts of the Epsom Salt and the oiljuice. There is a reason for the times given, they correspond with our biological clock.
I have another receipe for kidneycleanse, very simple,let me know if you want it. a-m