[anonymously]

PS: Has your dog had an x-ray to rule out calcium oxalate stones?
I use a potassium citrate/cranberry supplement I get from Chewy.com. It depends on the type of stones.
It is best to get approval from the veterinarian that is treating the dog before adding anything, and I would go along with the prescription diet for now. PH levels fluctuate and it takes a while (sometimes weeks) to see changes, at least that is what my vet told me.