Tamoxifen troubles

Former Member
Former Member
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Hello All,

I'm 50 and had a lumpectomy and sentinel node biopsy back in the middle of July. I am lucky that I don't need any chemotherapy, awaiting radiotherapy in November. Came off my HRT prior to surgery on hearing I was ER/PR positive. Also had mirena coil removed.

I was prescribed tamoxifen at my first oncology appointment just over two weeks ago, the oncologist was very clear that if I couldn't tolerate it then they would try something else and that if necessary I was low risk so not taking anything wouldn't be a big issue. Only started taking it 9 days ago as I had a wobble about side effects and they've already kicked in.

I've already become a miserable witch, I feel permanently sick, could sleep all day, crying and snapping at everyone. I don't have any energy to do the things that make me happy and I just want to stay away from everyone as I am making them miserable too.

Is this normal? It seems very quick to be experiencing such extreme side effects. I know it's early days but I can't work/ function and my moods are not fair on my children or partner. ( this is why I took HRT in the first place)

  • Hi so sorry to hear this. I suggest you get an appointment with your breast team and talk this through and see what they advise.  Quality of life is an important factor in treatment and I am sure they will help you work this through.  Best wishes 

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  • Hi Sundrop

    I could have written your post myself! I was exactly the same as you in terms of age, cancer diagnosis & treatment (surgery/radiotherapy/tamoxifen) and having to stop HRT/ have Mirena coil removed. I was diagnosed in February this year.

    I have struggled with nausea, insomnia, hot flushes and tiredness/weakness since starting on tamoxifen in April. The side effects have started to ease, but it's taking a long time. Three things that have helped me:

    - venlafaxine (an anti anxiety medication which also helps with hot flushes and other tamoxifen side effects)

    - changing to a different brand of tamoxifen. I've no idea why this helps, but there is one brand I refuse to take now as it made me feel particularly rough.

    - getting back into the swimming pool and building up my strength (I love the water) :-)

    I hope this helps a bit and you feel better soon. At present I would rather suck up the side effects than increase my risk of reoccurrence, but my cancer nurses remind me that there is definitely a quality of life consideration.

    Xx

  • Former Member
    Former Member in reply to DollyP

    Thank you so much for your response, sounds dreadful but I'm glad I'm not alone! Also glad things appear to be improving for you Blush.

    Could I ask which brand made you feel rough, and which work best for you? I'm about to order a repeat prescription so would be great to have some pointers.

    I'm going to take it for a month and then reassess, I know I can't live crying half the time and not able to do the exercise I love (cycling and running - was doing between surgery and tamoxifen with no issues, now it wipes me out for the next day) 

    I would consider venlafaxine but aware it has its own host of side effects - have you managed to avoid those.

    Sage seems to be tackling the hot flushes for me - hooray!

    Thank you again, your reply means a lot

  • Former Member
    Former Member in reply to Irishgirl16

    Thank you, I'm planning on continuing for a month and then going back if things don't improve, I know they'll be supportive.