FDAnews
www.fdanews.com/articles/114735-menopause-drug-tied-to-breast-cancer-recurrence

Menopause Drug Tied to Breast Cancer Recurrence

February 18, 2009
A large study of tibolone, a drug used to treat menopausal symptoms and to prevent osteoporosis, was halted early after researchers found that the synthetic steroid significantly increased the risk of recurrent breast cancer among survivors of the disease.
HealthDay