Progesterone is a natural female hormone. Called “the pregnancy hormone,” it is essential before and during pregnancy.
Progesterone supplementation is often necessary during Assisted Reproductive Technology (ART) procedures, such as in-vitro fertilization (IVF) because the medications you may use during these procedures can suppress your body’s ability to produce progesterone. Certain procedures can even, inadvertently, remove progesterone-producing cells from your ovaries.
Sometimes, there are other reasons to use progesterone supplementation, such as little or no progesterone production from the ovaries or poorly developed follicles that do not secrete enough progesterone to develop the uterine lining.
The bottom line is this — all women who wish to become pregnant need progesterone to help the uterus prepare for and maintain a fertilized egg.
Before pregnancy
Progesterone prepares the uterus for pregnancy.
After ovulation occurs, the ovaries start to produce progesterone needed by the uterus. Progesterone causes the uterine lining or endometrium to thicken. This helps prepare a supportive environment in your uterus for a fertilized egg.
During pregnancy
Progesterone helps nurture the fetus.
A supply of progesterone to the endometrium continues to be important during pregnancy. Following a successful implantation, progesterone helps maintain a supportive environment for the developing fetus. After 8 to 10 weeks of pregnancy, the placenta takes over progesterone production from the ovaries and substantially increases progesterone production.
Forms of progesterone
Several types of progesterone are available, including vaginal products that deliver progesterone directly to the uterus. The different forms include the following:
Vaginal gel:
- Used once a day for progesterone supplementation
- In studies where patient preference was measured, a majority of women preferred the gel for comfort and convenience over other progesterone formulations
- Some discharge reported during use
Vaginal suppositories:
- Compounded at specialty pharmacists
- Wax-based
- Used 2 to 3 times a day
- Leakage can be messy
Vaginal inserts:
- Designed for vaginal use
- Effective in women under 35 years; no established results in women over 35 years
- Used 2 to 3 times a day
Progesterone oral capsules, used vaginally:
- Fewer side effects when capsules are used vaginally instead of orally
- Used up to 3 times a day
Injections:
- An oil-based solution (sometimes called progesterone in oil)
- Widely used; the oldest, most established method of progesterone delivery
- Injected into the buttocks once a day
- Require long, thick needle to penetrate layers of skin and fat
- Difficult to administer by yourself
- Injections may be painful
- Skin reactions are common
Choosing the progesterone supplementation for you
A decision that you and your health care provider can make together.
Progesterone is an important part of infertility treatment because it supports implantation and pregnancy. Health care providers often have a preference for which form of progesterone they prescribe for infertility treatment. Their preference is generally based on their experience with the various methods. But patient convenience and request are also important considerations.
Most women prefer a progesterone formulation that is easy, convenient, and comfortable.
So, be sure to discuss your options with your health care provider.
– Content courtesy of Resolve
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