I've been on Tamoxifen about 9 months. I was getting a lot of aches so I started taking bio magnesium supplement and vita D supplement. If I don't have a banana that day I will also take a potassium tablet as mine is always low. I still get stiff and last night I almost had to get up for some Panadol but thankfully it eased and I was able to sleep. I developed a blockage in the vein behind my eye recently which I think could be a side affect of the Tamoxifen. Treatment seems to be just observation which is annoying. I have put myself on half a tablet of aspirin 100mg daily in the hopes I don't develop anything else. I was taking a whole tablet but any nick I get to my skin bleeds like heck so I cut the aspro in half so technically its only 50mg. I clot better now.