You are right, at this time there is not a proven protocol for recolonization of the gut, which is critical to treatment of candida. Individual probiotic strains have been researched, but none have been found that are able to live forever in the gut. There are over 800 types of bacteria in the gut, a small ecosystem. When people take Antibiotics and get down to around 4-500 types they often begin having chronic health problems. Many of the bacteria have roles in hormonal and cytokine regulation, and this destruction of the ecosystem causes imbalances. This is an area of research that is greatly lacking, as many of these bacteria haven't been researched or even identified yet. Your best bet at healing the gut lining is by using aloe and omega 7 oil. Reducing the candida load is important, and you might look into sanum therapy, its supposed to work pretty well.