I did a 35 day Master-Cleanse this past December and had no issues with the tea. After I quit the MC, my rear was kinda tender... I had on average 10-15 BMs a day during the MC! Now that I've been back on normal food for about a month, everything is back to normal. I have one BM a day, sometimes 2.
But this is just for me, everybody is different and reacts differently depending on thier own body and circumstances.
Going back and reading through the old posts would probably help you the most to get a feel for how different people react. There is quite a lot of information there.