Yes, I use it and have for quite a while.
It made a tremendous difference with my yeasty bulldogs and they look great. I haven't had a tear stain problem in years!
It does tend to make them constipated so I add water to their food when I feed (it also releases the aromas) and mix in some soft food on top for the morning feeding to loosen them up. The plus side is very little poop and it barely stinks!