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Water, water, and more water.
Frequent bathroom breaks. Otherwise, consult a Veterinary Internal Medicine Specialist.
The food can only do so much, most supplements are crap.
The PH strips are a joke, go to your vet every 3 months to check (urine sample).
Even with dietary changes, a change in the PH won’t show up for a month or two (this is what my vet told me).
Also, walk the dog more, get the extra weight off. Two meals a day, measured amounts, no snacks. No free feeding. If need be, 3 small meals per day.
PS: Nothing wrong with prescription dog food. http://skeptvet.com/Blog/2016/07/more-nonsense-from-holistic-vets-about-commercial-therapeutic-diets/
