It is very easy, first take a bunch of parsley or Cilantro ( Coriander Leaves ) and wash it clean
Then cut it in small pieces and put it in a pot and pour clean water and boil it for ten minutes and let it cool down and then filter it and pour in a clean bottle and keep it inside refrigerator to cool.
Drink one glass daily and you will notice all salt and other accumulated poison coming out of your kidney by urination also you will be able to notice the difference which you never felt before.
Parsley (Cilantro) is known as best cleaning treatment for kidneys and it is natural!