Method	Timing after intercourse	Expected pregnancies prevented	Contraindications
Copper intrauterine device (IUD)	0-120 hours	99%	acute pelvic infection or cervicitis undiagnosed vaginal bleeding Wilson's disease
Ulipristal pill (Ella, Fibristal)	0-120 hours	>=85%	renal or hepatic impairment uncontrolled asthma
Levonorgestrel pill	0-72 hours	85%	None
Oral contraceptive pills containing levonorgestrel or norgestrel	0-72 hours	75%	None

 

See also:

     Postexposure prophylaxis for sexual assault

 

 

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The Compendium platform was created by David Kwinter, MD, CCFP(EM).