Ella works through its action on progesterone receptors in the body:
- Delaying Ovulation: Ulipristal acetate works by blocking or delaying the release of the egg from the ovary, preventing fertilization. This makes it less likely for the sperm to meet and fertilize an egg.
- Inhibition of Fertilization: By modifying the hormonal balance, Ella can affect the uterine lining, making it less likely for a fertilized egg to implant in the uterus.
- Effectiveness Window: Ella is effective within 120 hours after unprotected sex, but it is most effective when taken within 72 hours (3 days). The earlier you take Ella after the contraceptive failure or unprotected intercourse, the better it will work.
It is important to note that Ella will not be effective if you are already pregnant and will not harm an existing pregnancy.
- Not for Regular Contraception: Ella is an emergency contraceptive and should not be used as a regular form of birth control. It is not as effective as regular contraceptive methods.
- Pregnancy: Ella will not work if you are already pregnant. If you suspect you are pregnant, you should not take Ella.
- Breastfeeding: Ulipristal acetate passes into breast milk, but it is considered safe for occasional use. However, consult with your healthcare provider before using it while breastfeeding.
Existing Health Conditions: If you have certain conditions, such as liver disease or severe asthma, consult your doctor before using Ella, as it may affect the way your body metabolizes the medication.
- Ella may interact with certain medications, which could reduce its effectiveness. These include:
- Enzyme-inducing medications such as rifampin, phenytoin, and carbamazepine, which can reduce the effectiveness of Ella.
- HIV medications, particularly protease inhibitors, may also reduce the effectiveness of the drug.
- St. John’s Wort, a common herbal supplement, can interfere with the effectiveness of Ella.
It is important to inform your healthcare provider of any other medications or supplements you are taking before using Ella.
- Adults: One 30 mg tablet should be taken as soon as possible after unprotected sex or contraceptive failure. The tablet is typically taken in one dose, but in some rare cases, a healthcare provider may recommend a second dose.
Adolescents and Children: Ella is approved for use in women and adolescents who are 12 years of age or older. It is not recommended for younger children or men.
Ella is a prescription medication, meaning it cannot be purchased over the counter in most countries. A healthcare provider will evaluate whether it is suitable for you based on your medical history and current health status. It’s important to consult a healthcare provider as soon as possible to ensure proper usage.