I got "backed up" once...had the headache from HELL!
Did the salt-water cleanse, and I literally flushed my headache down the toilet before the "butt-pee" even started.
PS:
If you ever actually do the salt-water cleanse (and I highly recommend it), you WILL learn what "butt-pee" is.
For your first time, I suggest you do this cleanse on a morning you have nothing else planned.
I now have it down to a science. From start to finish, I'm done in less than an hour and a half...sometimes I'm actually "DONE-(done needing the toilet) in ONE hour's time!