[header] How to understand hormone replacement therapy [title] Know the major types of hormone replacement therapy or hrt. [step] Progesterone and estrogen are two widely used medications for hormone replacement. [substeps] Progesterone and estrogen combined therapy is used during the perimenopause or phase one of menopause. 
Progesterone " only " therapy can be used by women who have their uterus. Estrogen " only " therapy is used by women that had a hysterectomy or removal of the uterus.