Patients w/ bleeding diatheses, thrombocytopenia or taking anticoagulant treatment. Thromboembolic events in women w/ advanced breast cancer. Dorsogluteal inj site due to proximity of underlying sciatic nerve. Potential risk of osteoporosis. May interfere w/ Ab based-estradiol assays & falsely increased levels of estradiol. Observe patients who experience asthenia when driving or operating machinery. Mild to moderate hepatic impairment. Severe renal impairment (CrCl <30 mL/min). Use effective contraception while on treatment in patients of child-bearing potential. Not recommended in childn & adolescents.