I seen to have come in on an old thread but assume insomnia from Anastrozole is ongoing still, it is for me. I've been taking it for nearly 2 years now and never realised insomnia was a side affect as it's not listed as one. I've been struggling with sleep since finishing treatment in October 2019, along with fatigue, the hot flushes and aching joints. My surgeon recently suggested I stop taking the tablets for one month and if I feel the same continue with tablets, or, if I feel better he'd let me try another make of the same drug. Well, I didn't think it had made any difference, but I actually slept well. I hadn't blamed the drug for insomnia, I thought that was due to the flushes! I've been back on Anastrozole now for a week and I'm back with insomnia and it's awful. I take my tablet in the morning but I will try taking it at night now as I can see the logic that it may then be waning when I go to bed. I'll post if this works if anyone responds to this. I'm worried about changing brands in case it's worse!
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