I did a liver/gallbladder flush successfully without the supplements or doing a kidney zap or parazap. Of all the protocols and healing modalities out there the Andreas liver/gallbladder flush had the most impact. I personally recommend trying it for yourself and see how you feel after.
The beauty of the liver/gallbladder flush is that you do not have to commit to doing them forever. I recommend you try it out once, and see if it works for you.
Personally I was doubled over in pain when before I tried my first liver/gallbladder flush, and the instant relief I got instantly after drinking the oil/grapefruit was unreal.