I may have been too caustic. I just pointed out the authors cuffs and collars don't match. Information is the key to enlightenment, and the question is the basis of knowledge. If you want information there are plenty of posts here you can read about the subject. But, if its true that the author's "personal view on these kinds of things is in the end...to BASE EVERYTHING ON RESULTS!!" then does it refer to other peoples results, or their own?

Since you like to find what did not work, I can tell you that after 2 and half years
I still have a 27 mm calcified stone. Took all the softeners like GCG etc, chanca piedra, malic acid. phosfood, artichoke capsules (for bile), casteroil packs and now I am using 2x a day lemonjuice in water, chamomile and enteric peppermintoil capsules. The result: the stone is still there and did not shrink. I also know from someone on the forum who did not want to do the flush and used the GCG etc for a year, that the stone had may be changed a few mm, but that can be in the different measurements and ended up going for surgery. He reported back after the surgery but was still not well enough at that time and after that disappeared.
So you can understand that I am pretty sceptical about all the supplements. I am sure some people will feel better because that is the first time the liver and gallbladder are getting attention. See the problem is that every flush is different, so when I hear how well people did with certain supplements because they had a better flush, you will never know because may be
the time had come to get that better flush, supplements or not.

I also have a long list of positives, which out weigh this negative, but that is not what you are asking for.