What is Evista? from drug.com

Evista affects the cycle of bone formation and breakdown in the body and reduces loss of bone tissue.

Evista is used to treat or prevent osteoporosis in postmenopausal women.

Warnings - Taking Evista may increase your risk of a blood clot in your leg, your lung, or your eye. You should not take this medicine if you have ever had a blood clot.

Evista can also increase your risk of a stroke, which can be fatal. This risk is highest if you have coronary heart disease or certain risk factors (such as diabetes, smoking, being overweight, having high blood pressure or high cholesterol, or having a family history of coronary artery disease).

(this drug is "supposed" to slow down bone loss, but not build bone, and probably does work on some women, from Pam on this website