<prompt> Effect of tamoxifen:-Increased risk of endometrial carcinomaDecreased risk of ovarian CACauses cardiotoxicityIncreased risk of osteoporosis  <response>: Effects of tamoxifen Tamoxifen is an S.E.R.M selective estrogen receptor modulator Increase risk of endometrial cancer Decrease risk of osteoporosis Useful in breast cancer Menopausal symptoms like hot flushes 