Side effects of tamoxifen

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One thing I forgot to ask at a recent appointment is do the side effects go after the 5 years of taking the tablet. I had swollen feet and legs over the summer and was told to come off the tamoxifen while I was checked for blood clots. Luckily it wasn't that. I am now taking the tamoxifen again but muscle weakness is annoying me, hot flushes and generally feeling not well. I have 2 more years to go on the tamoxifen but wondered if the muscle weakness will be permanent. I'm assuming the hot flushes will end. My legs aren't swollen now which is a bonus and was maybe to do with the hot weather.

I have tried Letrozole to start with but the muscle weakness with that was so bad I could hardly walk. I don't think there are any other options

  • Hi

    I'm in my 1st year of 7 taking Tamoxifen (started February of this year) and the side effects are extreme. My GP said to keep going after conferring with the cancer team. I get awful hot flushes and now cold sweats as if my body can't regulate it's temperature control

    .I don't get muscle weakness but restless legs and muscle spasms, usually when I lay down or put my legs in an elevation. I still get sickness/nausea and extreme tiredness to the point I still need help at times but found my sleep drastically reduced. Used to be a 12hr sleeper, now a 3 or 4 hr if I'm lucky. I don't know if anyone has experienced this?!?

    I've also found that, although I didn't get neuropathy during chemo, It's really bad now in toes and finger tips!

    Let us know if it does get any easier

    Take care of yourself

  • Luckily I didn't need chemotherapy. I just had a lumpectomy and radiotherapy, then the letrozole for less than 2 years before it made my mobility bad. I've been on the tamoxifen since then and now you mention it I do wake up loads during the night. I used to sleep well. The other thing I've noticed is that I get quite bad tempered sometimes and that's just not in my nature. I'm usually very laid back. I'm worried these changes might stay with me even when I finish taking the tablets.

    Thanks for replying and sharing your symptoms 

  • Letrozole hasn't affected my mobility but it has affected my sleep and mood. I've put it down to lack of hormones as they're classic symptoms of menopause. My mood sort of levelled out after a while but sleep can be really patchy

  • Thanks for replying. I'm lucky that I didn't have any of the negative symptoms when I went through the menopause. I just didn't think about it. Now I'm in my 70s it's quite hard to put up with. Only 2 years to go hopefully