@mj65 sadly there is some cases that return even after we take every possible treatment or prevention. Even in those of us who lived a very “healthy” lifestyle.
I was given letrozole for a short time but it was contraindicated with another medicine I was taking, so it was back to anastrazole for me.
For some of us, it is a benefit to know that we did everything we could to prevent it. I never have to look back and wonder if it came back because I refused a treatment.
The great news here is, there is so many tools in the box to treat us. If one tool doesn’t work for you, then maybe there is a better tool out there, or another one on the way.
I would never refuse a medication based on someone else’s side effects. What have you got to lose by trying it?
You might not have any problem, if you do, are you comfortable asking your doctor for a change in medication?