Hi Trixie, I've posted several times about my bad experience with Anastrozole. I then went on Exemestane and had some negative side effects. Currently I'm taking a break from all the AIs and am scheduled to start Tamoxifen in January. I'm 75 and I'm very worried about blood clots with that drug, though. Does anyone have experience with Tamoxifen or have any credible information about the possible side effects?