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I think the decision to take an AI for 3-5 years is one of the harder decisions of dealing with Breast Cancer. I took Arimidex for 6 months prior to surgery as part of research study. As a result, I know the Arimidex did what it was suppose to do based on test results during diagnosis and then again after 3 months of Arimidex. With that being said, it came with side effects, for me it was depression.
I stopped taking after surgery, then did chemo and radiation. I have had multiple discussion with oncologist about AIs and have agreed to try Letrozole for a month and then will meet with oncologist again.
I am willing to try it, but if side effects are to severe, I will re-evaluate.
Everyone has different reactions to meds. And you hear more from those who have negative side effects then those with no problems. My sister had breast cancer and had no problems with AI.