Final answer:
Levonorgestrel is a synthetic progesterone used to prevent ovulation, thicken cervical mucus, and alter the uterine lining. Side effects include nausea and abdominal pain, and it must be taken within 72 hours after unprotected intercourse. If contraception fails, seeking prenatal care is necessary.
Step-by-step explanation:
Mechanism of Action of Levonorgestrel Contraception
Levonorgestrel is a synthetic form of the hormone progesterone, used as an emergency contraceptive. Its primary mechanism of action is to prevent ovulation by inhibiting the release of the luteinizing hormone (LH) from the pituitary gland. This is significant because LH is responsible for triggering ovulation, and by preventing its release, levonorgestrel can stop the ovary from releasing an egg. Additionally, it causes thickening of the cervical mucus, which acts as a barrier to sperm, and may alter the uterine lining, making it less suitable for implantation.
Potential Side Effects of Levonorgestrel
Common side effects include nausea, abdominal pain, fatigue, headache, and changes in menstrual flow. There is also a slight risk of forming blood clots, similar to other hormonal contraception methods.
Proper Usage Instructions for Levonorgestrel
Levonorgestrel should be taken as soon as possible within 72 hours after unprotected intercourse for optimal effectiveness. It's a single-dose pill, and instructions on the packaging should be followed closely.
Prenatal Care Options Post-Contraception
Should contraception fail and pregnancy occur, it is important to seek prenatal care options. Regular check-ups, nutritional support, and other health services are essential for the well-being of both the mother and baby.