How morning after pill works? – 3D animation
Mode of action of emergency contraception www.escapelle.com www.postinorpill.com
Croxatto HB, et al. Pituitary-ovarian function following the standard levonorgestrel emergency contraceptive dose or a single 0.75 mg dose given on the days preceding ovulation. Contraception 2004; 70(6):442–450.
De Santis M, et al. Failure of the emergency contraceptive levonorgestrel and the risk of adverse effects in pregnancy and on fetal development: an observational cohort study. Fertil Steril 2005; 84:296 –299.
Durand M, et al. On the mechanisms of action of short-term levonorgestrel administration in emergency contraception. Contraception 2001; 64(4):227–234.
Hapangama D, et al. The effects of peri-ovulatory administration of levonorgestrel on the menstrual cycle. Contraception 2001; 63:123-129.
ICEC: Emergency contraception and medical abortion. February 2013
http://www.cecinfo.org/custom-content/uploads/2014/01/ICEC_Medical-Abortion-Fact-Sheet_Feb-2013.pdf (accessed in August 2017)
ICEC and FIGO. How do levonorgestrel-only emergency contraceptive pills (LNG ECPs) prevent pregnancy? (Statement on Mechanism of Action). March 2012
http://www.cecinfo.org/custom-content/uploads/2014/01/ICEC_MoA_Statement_3-28-12.pdf (accessed in August 2017)
Lalitkumar PGL, et al. Mifepristone, but not levonorgestrel, inhibits human blastocyst attachment to an in vitro endometrial three-dimensional cell culture model. Human Reproduction 2007; 1-7.
Marions L, et al. Emergency contraception with mifepristone and levonorgestrel: mechanism of action. Obstet Gynecol 2002; 100:65–71.
Marions L, et al. Effect of emergency contraception with levonorgestrel or mifepristone on ovarian function. Contraception 2004; 69(5):373-377.
Meng CX, et al. Effect of levonorgestrel and mifepristone on endometrial receptivity markers in a three-dimensional human endometrial cell culture model. Fertility and Sterility 2009; 91(1):256-264.
Meng CX, et al. Effects of oral and vaginal administration of levonorgestrel emergency contraception on markers of endometrial receptivity. Hum Reprod 2010; 25(4):874-883.
Müller LA, et al. Postcoital treatment with levonorgestrel does not disrupt postfertilization events in the rat. Contraception 2003; 67:415–419.
Novikova N, et al. Effectiveness of levonorgestrel emergency contraception given before or after ovulation-a pilot study. Contraception 2007; 75(2):112-118.
Okewole IA, et al. Effect of single administration of levonorgestrel on the menstrual cycle Contraception 2007; 75(5):372-377.
Ortiz ME, et al. Post-coital administration of levonorgestrel does not interfere with post-fertilization events in the new world monkey Cebus apella. Hum Reprod 2004; 19(6):1352–1356.
Palomino WA, et al. A single midcycle dose of levonorgestrel similar to emergency contraceptive does not alter the expression of the L-selectin ligand or molecular markers of endometrial receptivity Fertil Steril 2010; 94(5):n1589-94.
Pitkin J, et al. Obstetrics and Gynaecology. 2003, Elsevier Science Limited.
Planned Parenthood Federation of America (PPFA). The difference between the Morning-After Pill and the Abortion Pill
https://www.plannedparenthood.org/files/3914/6012/8466/Difference_Between_the_Morning-After_Pill_and_the_Abortion_Pill.pdf?_ga=1.136880304.1649696582.1475150110 (accessed in August 2017)
Senanayake P, et al. Atlas of Contraception. Second Edition, 2008, Informa UK Ltd.
Tirelli A, et al. Levonorgestrel administration in emergency contraception: bleeding pattern and pituitary-ovarian function Contraception 2008; 77(5):328-332.
Vargas MF, et al. Effect of single post-ovulatory administration of levonorgestrel on gene expression profile during the receptive period of the human endometrium. J Mol Endocrinol 2012; 48(1):25-36.
Wilcox AJ, et al. The timing of the “fertile window” in the menstrual cycle: day specific estimates from a prospective study. BMJ 2000; 321: 1259–1262.
Wilcox AJ, et al. Timing of sexual intercourse in relation to ovulation N Engl J Med 1995; 333:1517–1521.
WHO: Fact Sheet on Emergency contraception, June 2017
http://www.who.int/mediacentre/factsheets/fs244/en/ (accessed in August 2017)
Zhang L, et al. Pregnancy outcome after levonorgestrel-only emergency contraception failure: a prospective cohort study. Human Reproduction 2009; 24(7):1605-1611.