Levonorgestrel is a form of emergency contraception commonly referred to as the morning-after pill. It is administered following unprotected sexual intercourse to avert pregnancy. The primary component, levonorgestrel, functions as a hormonal contraceptive that inhibits or postpones the ovulation process, thereby preventing fertilization.
- 95% effective within 24 hours after unprotected sex.
- 85% effective if taken between 25–48 hours.
- Effectiveness is low after 49–72 hours.
Levonorgestrel is most effective when taken at the earliest opportunity.
How do I take Levonorgestrel? Take one tablet within 72 hours (3 days). If you vomit or have diarrhoea within three hours, it may not have been adequately absorbed.
Side effects: Headaches, breast sensitivity, fatigue, dizziness, diarrhoea, nausea, vomiting; spotting may occur before your next period. If you vomit within three hours, you may need another dose.
Patient information leaflet – Levonelle