I was on letrozole. It gave me terrible headaches. Talk to your oncologist. There are a couple other meds that they can try. Anestrozle and another one. I've tried all of them. Your Dr should be willing to work with you to find the medication that works best for you.

I had a total hysterectomy because of history of fibroids and anti-hormonal medication have a 5% chance of causing uterine cancer. I was switched from Tomoxifen to Femara.

I was on it. Caused so much joint pain i had to stop. Now on exemestane. Much better