WHAT IS PROGESTERONE THERAPY?
HOW DOES PROGESTERONE THERAPY WORK?
HOW MUCH DOES PROGESTERONE THERAPY COST?
HOW LONG DOES PROGESTERONE THERAPY LAST?
About Progesterone Replacement Therapy
Progesterone is a hormone that occurs naturally in the body. It can also be made in a laboratory. "Progestin" is a general term for a substance that causes some or all of the biologic effects of progesterone. The term "progestin" is sometimes used to refer to the progesterone made in the laboratory that is in oral contraceptives and hormone replacement therapy.
Women commonly take progesterone to help restart menstrual periods that unexpectedly stopped (amenorrhea), treat abnormal uterine bleeding associated with hormonal imbalance, and treat severe symptoms of premenstrual syndrome (PMS). Progesterone is also used in combination with the hormone estrogen to "oppose estrogen" as part of hormone replacement therapy. If estrogen is given without progesterone, estrogen increases the risk of uterine cancer.
Source: WebMD