Think of The Master Cleanse as a starting point. Do it as it as written. It does act as a kidney cleanse. I followed mine with a Liver Flush 10 days after I finished a 10 day MC, then I did a parasite cleanse with Clarkia , then a one week Bowel Cleanse with Oxypowder . I considered myself "done" cleansing for a while. I plan on doing the above once a year and in between just try to be as healthy as I can. Good luck on your cleansing journey. Happy New Year!