← Return to Completed 5 years of anastrozole. Withdrawal symptoms? Side effects?

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@marthannw

Greetings everyone, I’m really happy to find this discussion about withdrawal from an AI. I took anastrozole for 7 years and stopped in mid-November 2020. I just couldn’t deal with the side effects any longer. Since I stopped I’ve had some symptoms that I did not have while taking it!
Frequent headaches, intense hot flashes preceded by feeling so weak I have to lie down and much worse pain in my hips. On the bright side, I no longer have daily muscle spasms in my back, the brain fog is lifting and lately I’m sleeping at night for longer stretches of time - sometimes five hours!
I’ve searched online for information on withdrawal and I can’t find any formal studies, only a few message boards like this one, including one in the UK. I’m thinking that stopping suddenly may not be the best method, but no evidence based information exists.

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Replies to "Greetings everyone, I’m really happy to find this discussion about withdrawal from an AI. I took..."

Hello, I’ve just finished taking anastrozole like you after 7 years. A few weeks after stopping I started getting daily headaches which I didn’t experience while taking the medication. My oncologist has referred me for a CT head scan which I am due to have this weekend. Understandably, I am so anxious it may be secondary breast cancer but am hoping it may be withdrawal from the drug.