Etonogestrel is a synthetic progestin hormone commonly used as a contraceptive. It is used as an implant, a single-rod device that is inserted under the skin and slowly releases the hormone into the body. The hormone works by preventing ovulation, stopping sperm from reaching the egg, and thickening the cervical mucus, making it difficult for sperm to penetrate. When taken correctly, it is 98% effective at preventing pregnancy. It is also sometimes used to treat endometriosis, a condition in which the uterine lining grows outside the uterus.
Etonogestrel is a synthetic hormone used for birth control in women. It works by preventing pregnancy and is available in two main forms:
- Implant: This is the most common form. The brand names are Nexplanon and Implanon. It's a small, thin rod inserted under the inner arm skin by a healthcare provider. The rod slowly releases etonogestrel into your body for up to three years.
- Vaginal Ring: This is combined with ethinylestradiol, an estrogen, and sold under the brand names NuvaRing and Circlet. It's a flexible ring inserted into the vagina that releases both etonogestrel and ethinylestradiol over a three-week period.
How Etonogestrel Prevents Pregnancy:
Etonogestrel acts in a few ways to prevent pregnancy:
- Suppressing Ovulation: It primarily works by stopping the release of an egg (ovulation) from the ovaries.
- Thickening Cervical Mucus: It makes the mucus around the cervix thicker, making it harder for sperm to reach the egg.
- Thinning Uterine Lining: It can thin the lining of the uterus, making it less hospitable for a fertilized egg to implant.
Benefits of Etonogestrel:
- Highly effective: Both the implant and vaginal ring have very high effectiveness rates in preventing pregnancy with typical use.
- Long-acting: The implant offers three years of contraception, while the vaginal ring needs to be replaced every three weeks.
- Reversible: Fertility usually returns quickly after the implant is removed or you stop using the vaginal ring.
- May reduce menstrual cramps: Some women experience lighter or fewer periods with etonogestrel.
Side Effects of Etonogestrel:
Common side effects can include:
- Irregular bleeding patterns, especially in the first few months of use.
- Breast tenderness.
- Mood swings.
- Headache.
- Weight changes.
- Vaginal discharge.
Etonogestrel is not right for everyone. It's important to consult a healthcare provider to discuss if etonogestrel is suitable for you, considering your individual medical history and birth control needs.