http://www.yorkietalk.com/forums/yor...ymes-yoda.html
There are many many threads on here about MVD or Liver shunt, and many mention different diets prescription, as well as home made, and also additives like milk thistle or denmarin, etc to help support the function of the liver.
You can also go to a
www.balanceit.com, and request a vet consult with a nutriontist to get a specifically adjusted diet for your dog.