Well, I'm not dismissing Dr. Gaier, just his protocol. The fact that he is a doctor does not make him infallible, just a doctor. His diet is quite high in processed foods, artificial sweeteners, sugars, and grains. I know that this will continue feeding the candida fungus, as well as causing additional irritation to the digestive system. An overgrowth of candida is most often accompanied by 'abraded' intestinal lining.
I am concerned that Gastropax may destroy all of the very necessary intestinal flora, because intestinal flora is anaerobic. Also, he keeps talking about bacteria, candida is a fungal overgrowth. If you have candida, and you 'cure' it, and then go back to eating the way you ate before the 'cure', you will have the same problems as pre-'cure'. Maybe not immediately, but as soon as something stresses your system sufficiently.
Eating foods that don't feed candida will eliminate all the symptoms of candida, you don't have to be as strict forever, as at the beginning of the 'diet'. You do need to be careful though.
If you want to try other methods, please, do so.
I was trying to be helpful. I have had a lot of experience in dealing with candida, and have been free of symptoms for many years. I have also assisted others in clearing candida. This is not a disorder with a 'silver bullet' magical cure. Again, I was trying to be of help, not forceful. Everyone needs to find their own way to do things. I wish you well, and if you would like any additional information, I'm happy to answer to the best of my knowledge.