What a great question. It seems like there are not as many of us who complete a long course of treatment on anastrazole but for those who do there are some long term effects.
I was young when I started all of my treatments, five years of tamoxifen then anastrazole, so to be fair I can’t blame everything on anastrazole. I also had decreased kidney function that did get better after treatment. It took a year of staying hydrated for sure, but it did not return completely to normal. I have always had to be careful to remain hydrated.
Did you get the drop in kidney function right away or some years in?