Concerned about the side effects of anastrozole

Posted by tinalove @tinalove, Jan 31, 2016

I completed all treatments for breast cancer but now I am supposed to take hormone blocker, named anastrozole. im concerned about the side effects. Has anyone here taken it and did anyone have hair loss?

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@auksst

Not sure what kind of breast cancer you have but if you have DCIS low dose tamoxifen may be an option. I am unable to post the link to breastcancer.org that has information on this.

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Hi Auksst, I noticed that you wished to post a URL to a resource with your post. You will be able to add URLs to your posts in a few days. There is a brief period where new members can't post links. We do this to deter spammers and keep the community safe. Clearly the link you wanted to post is not spam. Please allow me to post it for you.

- Low-Dose Tamoxifen May Be an Option to Reduce Risk of Recurrence, Invasive Disease After Non-Invasive Breast Cancer https://www.breastcancer.org/research-news/low-dose-tamoxifen-after-non-invasive-dx

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@cedar75

When I asked about estrogen hormonal levels I got the answer they really do not know what levels mean. If they were going to do levels they should have done a baseline before starting the drug. My frustration with A1 drugs is not only do they have significant side effects but despite thousands of women who are on these drugs they seem unable to state which women are at risk for side effects. Is it age, is it type of breast cancer, is it BMI, is it women who still have their ovaries. I am glad to see that someone is looking at dosage of these drugs because the concept of one size dose fits all seems not very scientific. Can you have the same efficacy at lower doses. Would lower doses mean lower side effects. The fact that 30-40% of women quit this therapy because of side effects is mind boggling. I have this feeling that all they want to do is treat side effects with other meds that have side effects instead of really looking at who is at risk and how to improve this therapy

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Not sure what kind of breast cancer you have but if you have DCIS low dose tamoxifen may be an option. I am unable to post the link to breastcancer.org that has information on this.

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@cedar75

When I asked about estrogen hormonal levels I got the answer they really do not know what levels mean. If they were going to do levels they should have done a baseline before starting the drug. My frustration with A1 drugs is not only do they have significant side effects but despite thousands of women who are on these drugs they seem unable to state which women are at risk for side effects. Is it age, is it type of breast cancer, is it BMI, is it women who still have their ovaries. I am glad to see that someone is looking at dosage of these drugs because the concept of one size dose fits all seems not very scientific. Can you have the same efficacy at lower doses. Would lower doses mean lower side effects. The fact that 30-40% of women quit this therapy because of side effects is mind boggling. I have this feeling that all they want to do is treat side effects with other meds that have side effects instead of really looking at who is at risk and how to improve this therapy

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Absolutely right! Thank you for your comment. It summarizes my questions perfectly. I’m going to keep asking questions. Like you said, I don’t believe I EVEN have a baseline. You would think that if they know the cancer was estrogen positive, they would be check my ‘levels’. 🤷‍♀️

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@sandyrob

How did you do on the higher dose of Anastrozole?

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The higher dose definitely lowered my estrogen after 8 weeks. It was 10mg. I had more hot flashes and initially, poor sleep. And about 4 weeks in, I started losing my hair (maybe 5-10 strands a day, but definitely more than usual.) Now I am on Letrozole, since end Dec. Hair loss has continued, but I am sleeping and hot flashes are less.

Any chance your oncologist is Dr G at Mayo? Your process is so similar to mine and he is good at getting people on the study.

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When I asked about estrogen hormonal levels I got the answer they really do not know what levels mean. If they were going to do levels they should have done a baseline before starting the drug. My frustration with A1 drugs is not only do they have significant side effects but despite thousands of women who are on these drugs they seem unable to state which women are at risk for side effects. Is it age, is it type of breast cancer, is it BMI, is it women who still have their ovaries. I am glad to see that someone is looking at dosage of these drugs because the concept of one size dose fits all seems not very scientific. Can you have the same efficacy at lower doses. Would lower doses mean lower side effects. The fact that 30-40% of women quit this therapy because of side effects is mind boggling. I have this feeling that all they want to do is treat side effects with other meds that have side effects instead of really looking at who is at risk and how to improve this therapy

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@jejones

It was a blood draw for me that told the oncologist that my estrogen was low enough. But it is frustrating when they can't tell you the exact number you have ..and what is acceptable. Keep pushing!!!!

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Thank you jejones. Blood test scheduled for June 24

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@jejones

That study will have them checking your estrogen levels more often. I was on a study last year. I hope that the 1 mg pill will reduce your estrogen level low enough. It does for most people (but not for me, so I had to go on the heavier dose of Anastrozole !!! ) All the best!!

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How did you do on the higher dose of Anastrozole?

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@sandyrob

I will be starting Anastrozole 1mg soon and agree to be in a study group. The info I got says that my blood will be checked in 8-10 weeks to see if it is working. Don't know what the test is called, but it exists.

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That study will have them checking your estrogen levels more often. I was on a study last year. I hope that the 1 mg pill will reduce your estrogen level low enough. It does for most people (but not for me, so I had to go on the heavier dose of Anastrozole !!! ) All the best!!

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It was a blood draw for me that told the oncologist that my estrogen was low enough. But it is frustrating when they can't tell you the exact number you have ..and what is acceptable. Keep pushing!!!!

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@cindylb

I have some thoughts on the AI's in general I'm going to share and I hope it doesn't get me kicked off this site (I love this site!)

When I was first diagnosed I was told NOT to go on sites, not to research, not to read anything but what they handed me at the doctors office because it would just scare and upset me and they were right. I went right ahead and researched and still do. The problem with research and reading and going onto support sites is that you will see the worst of the worst because people who aren't having symptoms or serious problems are moving on and living their lives but where does that leave those of us who just want to know and need to have the information? So, I read everything I can find and research every little thing because then at least I know what I don't have to worry about (ha ha).
The research I have done on the AI's shows all of the symptoms people on this site and thread complain of having. What we don't see is the people who take the drugs, have few if any symptoms and can use this treatment successfully and I'm sure there are many. However, that's not many of us and we need a place to ask questions, get support and get help deciding how to move forward. For those of us with symptoms from the AI's just know........the doctors will try to keep you on their program and on the pills as much and as long as they can because that's their job and that's what they do..........they fight cancer. They don't really know how you feel and how your quality of life day to day is affected and they don't really have any other options for you (at least not right now). The symptoms you are experiencing are unfortunately real and can be very serious. I know because that's been my experience.
I have had 4 oncologists in total for my care in the past five years and all of them recommended the AI's and all of them have pulled me off of them but then again, I have a small chance of recurrence anyway, so the decision was easier. But an important point to consider is this................the doctors will always recommend this treatment and will try to keep you on them if at all possible because that's what they do. They will tell you if you get bone issues, they have a drug for that. If you get depression they have a drug for that. If you get heart issues, they have a drug for that. It's what they do because the job of an oncologist is to cure or keep your cancer at bay....that's it. I am not saying doctors are cold hearted or don't care about how you feel, I'm sure they do for the most part but it doesn't change their protocol or options. AI's are a blanket treatment that works but for some the cost is too great.
If the AI's are causing you serious side effects it's time to ask your oncologist to explore additional options to either alleviate symptoms or possibly find targeted or immunotherapy or CBD/THC or............but please don't let them make you feel like this isn't really happening to you because as you see, there are many of us who can't tolerate these drugs and side effects.
I'm with all of you who are going through this because I've been there and still worry each day about recurrence since I can't take the drugs....but I couldn't get out of bed, couldn't function and couldn't enjoy my life. Push for treatment from your doctors that is tailored to you because it's your life and you need the support even if you can't fit into the bubble of care they have created.
Off the soapbox and many hugs to all

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Cindyb, Excellent post. I have been on Anastrozole for 21 months and am now having side effects. When questioning my oncologist in regards to how do they know it is working for me, he said he "takes it for granted" what?! When asked about estrogen test to see what anastrozole was doing and level of my estrogen, he said he didn't know if there was a test for that. I'm reading here that some of y'all have been tested and got results. What test did you have done, just a hormone test, estrogen and progesterone?? I am the point that I may look for another oncologist as my present one is just prescribing what is 'Protocol" and he is not looking at me at a human. I told him I did not want to be a lab rat and he got a little put off, Oh well.

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