*needs review* see [Dunn - contraception](x-devonthink-item://521F160D-30FF-4C41-BBD1-D9ACCB0173F1), [Sexual health victoria -- emergency contraceptive pill](https://shvic.org.au/for-you/contraception/emergency-contraception/morning-after-pill-emergency-contraception), [RWH - emergency contraception](https://www.thewomens.org.au/health-information/contraception/emergency-contraception), [RWH - getting emergency contraception from a pharmacy](https://www.thewomens.org.au/health-information/contraception/emergency-contraception/getting-emergency-contraception-from-a-pharmacy) progesteron only emergency contraception (POEC) dose: **levonorgestrel 0.75mg** po q12H x2 or 1.5mg STAT within 120h of sexual intercourse (ideally <72H) 1.1% failure rate if given <72H; prevents 85% of anticipated pregnancies much fewer side effects than Yuzpe method (not described here) **adverse effects** - nausea - vomiting - dizziness - fatigue alternatives: - mifepristone single 50mg oral dose - more effective - expensive - withdrawl bleed occurs after a few days - next period delayed - intrauterine contraceptive device - insertion of IUCD within 5 days is most effective (prevents 99.9% of pregnancies - no direct trials comparing hormonal regimens ## screening - ==exclude existing pregnancy!!== - IUDs - OCP - [[Sexually transmitted Infections]]/ [[Pelvic inflammatory disease|PID]] / [[HIV]] - screen for [[sexual assault]] - further prevention with IUD - follow up pregnancy testing / sti results