Medroxyprogesterone Acetate 150mg/mL Suspension for Injection Syringe. MEDROXYPROGESTERONE is a hormone in a class called progestins. It is commonly used to prevent the uterine lining from overgrowth in women taking an estrogen after menopause. It is also used to treat irregular menstrual bleeding or a lack of menstrual bleeding in women. 1/EA. Priced per each.