My only thing is, I think 99% of the benefit from Liver Flushing is from the lecithin in the olive oil, and the other 1% from belief.
Personally, I think people would get the same benefit from taking a little bit of lecithin everyday for maintenance, and maybe a lot more everyday if there is indeed an issue with stones.
As far as cholesterol, I don't know. Those who post positive benefits for that are probably doing many things concurrently and are contributing the cholesterol benefits to the liver flushing.