Hi Debbie: Tamoxifen has been shown to cut your risk of recurrence by about 40%. You need to weigh this benefit against the side effects, and then make your decision. Obviously, it's a tough one... but only you can make it. Also, if you're post-menopausal, take a look at my current post on tamoxifen. There's a genetic test that might help with your decision. Good luck - PJH