Levonogestrel (also known as Levonelle) works to prevent unwanted pregnancies if taken within 72 hours of unprotected sex. The sooner it is taken within the 72 hour window, the more effective it will be.
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How does it work?
Levonogestrel (also known as Levonelle) works to prevent unwanted pregnancies if taken within 72 hours of unprotected sex. The sooner it is taken within the 72 hour window, the more effective it will be. It works by stopping the ovaries from releasing an egg or preventing the sperm from fertilising an egg if already released.
The effectiveness of the pill decreases over time:
- 95% effective within the first 24 hours
- 85% effective between 24-48 hours
- 58% effective between 48-72 hours
How is it taken?
Levonogestrel is taken as a single dose, as soon as possible after sexual intercourse and ensuring it is within a 72 hour window.
It should be taken whole, with water. Do not chew or crush this tablet.
If you vomit within three hours of taking the medication, you should take another tablet immediately.
Side effects of sumatriptan
Like all medicines, levonogestrel can cause side effects. Not everybody will experience these side effects and if they do occur, they are usually mild to moderate in nature.
Common side effects of levonogestrelinclude:
- Irregular bleeding
- Lower stomach pain
- Effect on next period (can be earlier or later than expected)
For further information about levonogestrel please visit: https://www.medicines.org.uk/emc/product/7308/pil
Disclaimer: Responses and results from treatment may vary between individuals. Please consult a doctor if you have any concerns
One tablet, Two tablets