Introduction The levonorgestrel oral emergency contraceptive is well tolerated and effective,
however its use is still limited, mainly due to safety concerns. Objective This systematic …

Background Unintended pregnancy is a complex phenomenon which raise to take an
emergency decision. Low contraceptive prevalence and high user failure rates are the …

The United States Food and Drug Administration‐approved progestin‐only dosing strategy
for emergency contraception is levonorgestrel 0.75 mg taken as soon as possible within 72 …

Emergency contraception can prevent most pregnancies when taken after intercourse. It
provides an important back-up in cases of unprotected intercourse or contraceptive accident …

Purpose Levonorgestrel-only emergency contraception (EC) inhibits ovulation to prevent
fertilization. Misconceptions regarding its mechanism of action contribute to low use in some …

Background Levonorgestrel and ulipristal acetate are common emergency oral
contraceptives (EOCs). Lack of knowledge and negative attitude toward EOCs pose barriers …

Background Levonorgestrel, a standard drug for emergency contraception (EC), is not
effective if administered post-ovulation. A cyclo-oxygenase inhibitor could contribute …

Levonorgestrel-only emergency contraception was introduced onto the market in France in
May 1999 on the heels of a large-scale clinical trial demonstrating its enhanced efficacy and …

BACKGROUND Levonorgestrel (LNG), as a dedicated emergency contraception (EC)
product, has been available over-the-counter in China for 10 years. Until now, only a small …

BACKGROUND: The contraceptive efficacy of emergency contraceptive pills containing
levonorgestrel (LNG-EC) has been estimated in most previous studies by judging the day of …