Safety data for levonorgestrel, ulipristal acetate and Yuzpe regimens for emergency contraception

TC Jatlaoui, H Riley, KM Curtis - Contraception, 2016 - Elsevier
Abstract The World Health Organization (WHO) and the US Centers for Disease Control and
Prevention (CDC) provide recommendations for use of emergency contraceptive pills …

A randomized, double-blind, noninferiority study to compare two regimens of levonorgestrel for emergency contraception in Nigeria

OA Dada, EM Godfrey, G Piaggio, H von Hertzen - Contraception, 2010 - Elsevier
BACKGROUND: Unplanned pregnancies are common in Nigeria. Much of the unplanned
pregnancies is due to low contraceptive prevalence and high contraceptive user failure …

The pharmacokinetics of 750 μg levonorgestrel following administration of one single dose or two doses at 12-or 24-h interval

D Tremblay, E Gainer, A Ulmann - Contraception, 2001 - Elsevier
The administration of two tablets of 750 μg levonorgestrel at a 12-to 24-h interval has been
shown to be a safe and effective means of emergency contraception, and Norlevo/Vikela …

Effectiveness of levonorgestrel emergency contraception given before or after ovulation—a pilot study

N Novikova, E Weisberg, FZ Stanczyk, HB Croxatto… - Contraception, 2007 - Elsevier
BACKGROUND: Although widely used, the mechanisms of action of the levonorgestrel
emergency contraceptive pill (LNG ECP) are still unclear. There are increasing data to …

Mechanism of action of levonorgestrel emergency contraception

C Kahlenborn, R Peck, WB Severs - The Linacre Quarterly, 2015 - journals.sagepub.com
There has been much debate regarding levonorgestrel emergency contraception's (LNG-
EC's) method of action since 1999 when the Food and Drug Administration first approved its …

Effect of single administration of levonorgestrel on the menstrual cycle

IA Okewole, AO Arowojolu, OL Odusoga, OA Oloyede… - Contraception, 2007 - Elsevier
BACKGROUND: Levonorgestrel (LNG) 1.5 mg administered within 72 h of unprotected
coitus is an established method of emergency contraception. Currently, there is some …

Ectopic pregnancy following levonorgestrel emergency contraception: a case report

B Ghosh, V Dadhwal, D Deka, CK Ramesan, S Mittal - Contraception, 2009 - Elsevier
Use of levonorgestrel as emergency contraception is a safe and effective measure to
prevent unwanted pregnancy. However, ectopic gestation in case of failure is a known risk …

Modifying the Yuzpe regimen of emergency contraception: a multicenter randomized controlled trial

C Ellertson, A Webb, K Blanchard, A Bigrigg… - Obstetrics & …, 2003 - Elsevier
OBJECTIVE: Emergency contraceptives can prevent unintended pregnancy after
unprotected intercourse. The best-studied regimen (“Yuzpe”) consists of ordinary combined …

How do levonorgestrel-only emergency contraceptive pills prevent pregnancy? Some considerations

B Mozzanega, E Cosmi - Gynecological Endocrinology, 2011 - Taylor & Francis
Controversial opinions exist about the possible mechanisms throughout emergency
contraception prevents pregnancy. Recently, the International Federation of Gynaecology …

Emergency contraceptive pills: a review of the recent literature

LAE Conard, MA Gold - Current Opinion in Obstetrics and …, 2004 - journals.lww.com
Knowledge about the efficacy, safety, types and use of emergency contraception continues
to increase. Although patients have greater awareness of and more access to emergency …