@lizzabeth I took the smaller diabetic dose of Farxiga prescribed by my endocrinologist rather than the larger dose probably prescribed by your nephrologist. I started and stopped it over a period of 2 years. I worked up a spreadsheet showing both times my eGFR going down considerably when Farxiga was taken. I presented this to my Mayo nephrologist and he accpted this information.

The side effects are real when looking at their own website and others. On the other hand, my diabetic doc swears by the science as do some nephrologists. However, I had one nephrologist several years back who would not advise any of his patients to take the drug. As @gingerw said, if you watch your intake of sodium, potassium, phosphorous, follow your eGFR trend, and stay hydrated, that may suffice. BTW, my eGFR went down to the high teens from about 45 while taking Farxiga lower dose. I have since recovered back to Stage 3 levels after stopping.