Good product, although in the clinic I prefer a product with a more broad-spectrum activity. There are roughly 19 strains of candida that affect folks, along with potentially hundreds of fungal organisms, bacterium and parasites that can affect a person's GI tract who has a chronic yeast infection, and a more broad spectrum approach along with the right kind of foods will have a more wide-spread and positive affect on the gut than SF 722.
My concern with using one strong particular product is more of a direct "kill" one one or a few organisms, whereas a product with a more broad-spectrum approach is less likely to encourage to re-colonization of unfriendlies, especially when fermented & cultured foods and pro-biotics and enzymes are re-introduced.