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 …

OBJECTIVE: To determine pregnancy and neonatal outcome after the failure of
levonorgestrel as an emergency contraceptive. DESIGN: A retrospective observational …

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

Levonorgestrel (LNG), a dedicated emergency contraception (EC) product, has been
available over-the-counter in China for more than 14 yr. Although LNG-EC is considered to …

Cases of ectopic pregnancy (EP) following levonorgestrel emergency contraception (LNG-
EC) failure have been reported continuously, but whether there is an association between …

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

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 …

BACKGROUND: Although widely used, the mechanisms of action of the levonorgestrel
emergency contraceptive pill (LNG ECP) are still unclear. There are increasing data to …

Background: Recent studies have identified that levonorgestrel administered orally in
emergency contraception (LNG-EC) is only efficacious when taken before ovulation …