The reason you have diarrhea is probably because of a present infection. The fact that the diarrhea continues is that after the liver cleanse, the liver started working properly or better complimenting your immune system. Are you eating meat or food that's not watery, so it can have the time to bulk up in to a bowel/feces that is hard and properly colored?

Try taking Psyllium Husk fiber. That has soluble and insoluble fiber, is pretty cheap and does the job you are looking. After three days or so of taking it, you should return to normal digestion. Don't do another Liver Flush anytime soon until your bowel movements are properly aligned.