IMHO, this is the best on-line informational site regarding canine kidney health issues. It not only cover the kidney condition, it also gives you a list of foods and their relation to other foods deemed acceptable for kidney diets.
this particular page is especially most helpful: http://dogaware.com/health/kidneytable.html
With and EPI + Kidney dog….. the diet may need to be slightly modified…..if you have to use ingredients not that agreeable with the EPI … you can still effectively manage EPI via more enzymes and ‘tweaking” the amount of various ingredients in the kidney diet.
This is an overview of the contents of this link:
Chronic Kidney Disease
Commercial Kidney diet
Natural remedies for Kidney Disease : https://www.pethealthandnutritioncenter.com/collections/kidney-disease-dogs-cats?gclid=Cj0KCQjw1a6EBhC0ARIsAOiTkrFPUw7WkhZr9VXahZMd-9609hX_6M-5gtkhTZVFMdPnsM8qqr-Ca7YaAmQWEALw_wcB