Hi Linda H:
I fed Rx food for my pets’ specific urinary issues when they were diagnosed; I had success in both cases. Besides Hill’s I have fed Purina and Royal Canin Rx foods. Below are two sites I reference for info. Best wishes for speedy recoveries.
https://www.vetmed.umn.edu/centers-programs/minnesota-urolith-center/publications
PDF documents for specific Dx found here. The diet your Vet recommended is listed as an example for canine’s diagnosed with silica stones:
https://www.vetmed.umn.edu/centers-programs/minnesota-urolith-center/recommendations
https://www.merckvetmanual.com/urinary-system/noninfectious-diseases-of-the-urinary-system-in-small-animals/urolithiasis-in-small-animals
Hill’s Rx food:
https://www.hillspet.com/prescription-diet
Purina Rx:
https://www.proplanveterinarydiets.com/
Royal Canin Rx:
https://www.royalcanin.com/products/vet
