Sorry about having to make you “click” all over the place! Ideally I would like to seek permission to re-print this, but time is of the essence, and anyway, you can find it by googling “canine liver cleansing diets”.
This one I particularly like as it has been derived by the great Jean Dodds DVM.
Scottish Terrier Health Network 
Please lst me know if this is received. I sent a picture of our Mac for his birthday, but I don’t think that it arrived.
RgN