[anonymous]

Per the search engine: /forums/search/bladder+stones/
See my posts
Also regarding prescription food:

More Nonsense from Holistic Vets about Commercial Therapeutic Diets

I have used Royal Canin SO for a dog for a dog with bladder stones with good results.
Zignature is a quality food, copy the ingredient list from Chewy and show your vet, maybe the dog could have that? Or, 1/2 and 1/2 with the prescription food? Check with your vet.
Whatever you feed, add water and maybe soft food, presoak kibble and add water.

Dogs that get bladder stones often have a genetic predisposition (struvite and calcium oxalate are the most common), not enough water is another contributing factor.
Has she had an x-ray/ultrasound to rule out bladder stones? Because, they can have more than one type of stones. This also. can result in recurrent urinary tract infections.
Add water to the kibble, and you can also presoak the kibble in water overnight in the fridge prior to serving.
Offer frequent bathroom breaks/opportunities to urinate, keep the bladder flushed. Stagnant conditions in the bladder are conductive to stone formation.
Don’t free feed, 2 or 3 small meals a day is better and always have fresh water available. Maybe add a little plain chicken broth (no onion) to the kibble.
A blocked urethra is a medical emergency and can result in surgery to save the dog’s life.
Did the vet talk to you about prescription meds for stubborn cases? Don’t confuse supplements with medication.
Work with your vet, prescription food and all, when the dog has been stable for 6 months to 1 year you can discuss diet changes.
Use the search engine here to see more threads on this topic.
This is not veterinary advice; consult your veterinarian.
Ps: You may find some helpful information here http://skeptvet.com/Blog/?s=urinary+tract+infection