About gall stones

Has anyone ever done a flush on their dog? I have a 16 y.o. Doxie that had
an ultra sound and I was told he had a congested gall bladder. Modern drugs
are out of the question because I do not want to kill my dogs. I feed them a
raw organic diet and raise most of their food. I also do not vaccinate or give
them any drugs from the vet except chinese herbs. I have no clue how this
could have happened unless it was from when I use to buy their food…human
grade
just like you and I would eat. Any help you can give me would be greatly
appreciated. Thanks Jeannine