Tamoxifen的副作用如下(Ref: http://www.breastcancer.org/treatment/hormonal/serms/tamoxifen):Side effects of tamoxifen[p=22, null, left]Tamoxifen's selective estrogen activation effects can cause some serious side effects, including blood clots, stroke, and endometrial cancer. If you and your doctor are considering tamoxifen as part of your treatment plan, tell your doctor if you smoke or have a history of blood clots or heart attack. If you're taking tamoxifen, call your doctor immediately if you have any of these symptoms: