[anonymously]

I have also used prescription and nonprescription dog foods when recommended by a veterinarian that has examined my dog. I have noted no adverse effects.
Some science-based information here: http://skeptvet.com/Blog/category/nutrition/

I have used Royal Canin SO for a dog with kidney damage, the dog did well, you can always add a spoonful of homemade chicken broth.

Royal Canin adult
Science diet maintenance
Hills Ideal balance
Iams
Eukanuba
Proplan
Purina one