My thinking is that I don't know whether I have other parasites besides candida in my system but it's often that other organisms take advantage when you're in a weakened state and might be complicating matters and making it harder to heal.
The herbs also apparently expand in the intestines which might help destroy biofilms and make things less hospitable for the invaders in the system.
It's also an information gathering tool. Every experience helps sharpen the focus and helps with understanding your condition more.
So, this is another option to shake things up and get a handle on the problems.