If the kidneys are in trouble, then the liver is having a problem. So we do the liver first in people who are having problems with a very congested liver or who are in the "terminal" bracket with liver problems. People who don't have such a pressing liver problem start out with killing off the parasites and cleaning out the colon. If it were me, and I was having some kidney problems, I would do the Schulze's kidney/bladder tea along with starting out with the liver and then get to the colon a ways down the road. I had diabetes when I started this program and my legs were swelling some, that's why I did the KB tea. Barefoot also has some kidney/pancreas herbs that might help. The key is to get the pressure off the liver--clean it out-- so the kidneys won't have a problem. But I did the tea in the meantime, in the beginning.