Contraception & screeningFree in the app
Emergency contraception
Cu-IUD is the most effective.
Source: CoSRH (amended 2026)Methods
| Copper IUD | Up to 120 h after first UPSI, or up to 5 days after earliest likely ovulation. |
|---|---|
| Ulipristal 30 mg | Up to 120 h. Preferred near ovulation. |
| Levonorgestrel 1.5 mg | Up to 72 h (ineffective >96 h). 3 mg if BMI >26, weight >70 kg or enzyme inducers. |
After ulipristal, wait 5 days before starting hormonal contraception (use condoms). After levonorgestrel, start immediately.
A summary for trained clinicians. Always check the full guideline, the patient in front of you and your hospital's protocol. Spotted an error? Tell us.