ABSTRACT
There are two basic varieties of emergency contraception (EC), initiated after unprotected sexual intercourse (UPSI):
l Copper ions, inserted as a copper IUD l Hormonal methods, taken by mouth
Among the latter, past methods included estrogens alone in very high dose and the combined oral emergency contraceptive (COEC) using LNG 500 mg + EE 100 mg repeated in 12 hours. Currently marketed hormonal EC methods in the United Kingdom are
l the levonorgestrel progestogen-only emergency contraceptive (LNG EC, Levonelle 1500TM or Levonelle One StepTM) in a stat dose of LNG 1500 mg and
l ulipristal acetate (UPA, ellaOneTM) in a dose of 30 mg.
