Hi Deeay,
I had aching legs esp at night, which only occurred in my second year of tamoxifen. After some pondering and thinking what changed (was it me exercising?), I discovered that when I moved house and went to a different pharmacy I was given a different brand of tamoxifen. You might need to try a few, there is Nolvadex, Tamosin and another. I found Nolvadex the best. It might be the filler the pharmaceutical company uses. Some other ladies had the same issues.Some ladies also take 10 mg or 20 mg and fluctuate between the two after discussion with their oncologist, depending on how they tolerate the drug. Hope this helps.
Regards, Julie