I never heard that, about the potassium supplements. The recommended amount, 1 or two tabs a day didn’t lower the ph in his urine enough, so the vet gave me the green light to increase the dose. I have never noted any side effects.
My dog was on the prescription food too, but he didn’t like it, he likes Wysong senior (soaked in water overnight) with a little cooked chicken or lean meat.
homemade diet: http://www.homeovet.net/dynamic/php/downloads/dog-c8470f2c75dbe4b683205c3919ee2310/dog_diet_complete.pdf
