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Review Article

Mechanisms of action of oral emergency contraception

, &
Pages 685-687 | Received 23 Jul 2014, Accepted 29 Jul 2014, Published online: 12 Aug 2014

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Maripaz Jiménez Guerrero, Mariana Fava, Luiz F. Baccaro, Adriana M. Caille, Patricia S. Cuasnicú, José A. Horcajadas, Débora J. Cohen, Luis Bahamondes, David Cotán & María José Munuce. (2022) Effect of ulipristal acetate on gene expression profile in endometrial cells in culture and in vivo upon post-ovulatory administration in fertile women. The European Journal of Contraception & Reproductive Health Care 27:3, pages 199-207.
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Bruno Mozzanega & Giovanni Battista Nardelli. (2019) UPA and LNG in emergency contraception: the information by EMA and the scientific evidences indicate a prevalent anti-implantation effect. The European Journal of Contraception & Reproductive Health Care 24:1, pages 4-10.
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Sujatha Seetharaman, Sophia Yen & Seth D Ammerman. (2016) Improving adolescent knowledge of emergency contraception: challenges and solutions. Open Access Journal of Contraception 7, pages 161-173.
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Aníbal Faúndes, Maria José Osis, Maria Helena Sousa, Graciana Alves Duarte, Laura Miranda & William Oliveira. (2016) Physicians’ information to patients and prescription of the emergency contraceptive pill according to their personal experience of using the method and perception of its mechanism of action. The European Journal of Contraception & Reproductive Health Care 21:2, pages 176-182.
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Articles from other publishers (28)

Patryk Rudzinski, Inga Lopuszynska, Dorota Pazik, Dominik Adamowicz, Anna Jargielo, Aleksandra Cieslik, Karolina Kosieradzka, Justyna Stanczyk, Astrik Meliksetian & Alicja Wosinska. (2023) Emergency contraception – A review. European Journal of Obstetrics & Gynecology and Reproductive Biology 291, pages 213-218.
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Wuraola Akande-Sholabi, Valerie Dehinde-Joseph & Segun Johnson Showande. (2023) Emergency contraception – pharmacists’ knowledge and attitude on emergency contraceptives’ dispensing practices. Journal of Pharmaceutical Health Services Research 14:2, pages 159-166.
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Adnan Al Dalaty, Benedetta Gualeni, Sion A. Coulman & James C. Birchall. (2021) Models and methods to characterise levonorgestrel release from intradermally administered contraceptives. Drug Delivery and Translational Research 12:2, pages 335-349.
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Carol B Hanna, Deepti Mudaliar, Kristen John, C Leigh Allen, Luxin Sun, Jon E Hawkinson, Ernst Schönbrunn, Gunda I Georg & Jeffrey T Jensen. (2020) Development of WEE2 kinase inhibitors as novel non-hormonal female contraceptives that target meiosis†. Biology of Reproduction 103:2, pages 368-377.
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Cara Buskmiller, Donna Harrison, Lester A. Ruppersberger & Patrick P. YeungJr.Jr.. (2019) Systematic Review of Postfertilization Effects and Potential for Embryo Formation and Loss during the Use of Intrauterine Devices. The Linacre Quarterly 87:1, pages 60-77.
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L. Michie & S.T. Cameron. (2020) Emergency contraception and impact on abortion rates. Best Practice & Research Clinical Obstetrics & Gynaecology 63, pages 111-119.
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Matías D Gómez-Elías, María May, María José Munuce, Luis Bahamondes, Patricia S Cuasnicú & Débora J Cohen. (2019) A single post-ovulatory dose of ulipristal acetate impairs post-fertilization events in mice. MHR: Basic science of reproductive medicine 25:5, pages 257-264.
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Kamila Kolanska, Justine Varinot, Geoffroy Canlorbe, Christine Bergeron, Arsène Mekinian, Perrine Capmas, Martin Koskas, Emile Daraï, Selim Aractingi, Sofiane Bendifallah & Nathalie Chabbert-Buffet. (2019) Absence of predictable long-term molecular effect of ulipristal acetate (UPA) on the endometrium. Reproductive BioMedicine Online 38:5, pages 825-834.
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Paris Stowers & Renee Mestad. (2019) Use of levonorgestrel as emergency contraception in overweight women. Obesity Research & Clinical Practice 13:2, pages 180-183.
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Eun Sil LeeChong A LeeJee Hee LeeBo Ra ParkImsoon Lee. (2019) The attitudes of Korean physicians toward emergency contraceptive pills: regarding women's access and rescheduling. Obstetrics & Gynecology Science 62:3, pages 173.
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Celia M. J. Matyanga & Blessing Dzingirai. (2018) Clinical Pharmacology of Hormonal Emergency Contraceptive Pills. International Journal of Reproductive Medicine 2018, pages 1-5.
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Pedro-Antonio Regidor. (2018) The clinical relevance of progestogens in hormonal contraception: Present status and future developments. Oncotarget 9:77, pages 34628-34638.
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W. Elger, B. Schneider, Z. Killeen, K. Jewgenow, M. Dehnhard, M. Friedrich, B. Santhamma, R. Wedemeyer & K. Nickisch. (2018) Model for Hormonal Emergency Contraception (HEC) in cycling and mated guinea pigs – Studies with the Progesterone Receptor Modulators (PRM) Ulipristal Acetate (UPA/CDB2914) and EC317. The Journal of Steroid Biochemistry and Molecular Biology 183, pages 152-158.
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Andrea Swartzendruber, Riley J. Steiner & Anna Newton-Levinson. (2018) Contraceptive information on pregnancy resource center websites: a statewide content analysis. Contraception 98:2, pages 158-162.
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Sabine Segerer. (2017) Notfallkontrazeptiva — Bilanz nach Wegfall der Verschreibungspflicht. gynäkologie + geburtshilfe 22:5, pages 34-38.
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Rebecca Stone, Sally Rafie, Shareen Y. El-Ibiary, Veronica Vernon & Nicole M. Lodise. (2017) Emergency Contraception Algorithm and Guide for Clinicians. Nursing for Women's Health 21:4, pages 297-305.
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Melinda Vanya, Maria Matuz, Ria Benko, Reka Viola, Attila Horvath-Sziklai, Gyongyvér Soos & Gyorgy Bartfai. (2017) Knowledge and opinion of pharmacists on emergency contraceptive pills in Hungary. International Journal of Clinical Pharmacy 39:3, pages 594-600.
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Marion Kiechle & Miriam Neuenfeldt. (2016) Experience with oral emergency contraception since the OTC switch in Germany. Archives of Gynecology and Obstetrics 295:3, pages 651-660.
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Sharon Cameron. 2017. Frontiers in Gynecological Endocrinology. Frontiers in Gynecological Endocrinology 189 198 .
Caitlin Allen, Ginger Evans & Eliza L. Sutton. (2016) Pharmacologic Therapies in Women’s Health. Medical Clinics of North America 100:4, pages 763-789.
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Rulin Wang, Yuan Tian, Lin Zhang & Zunjian Zhang. (2016) Simultaneous determination of levonorgestrel and two endogenous sex hormones in human plasma based on LC–MS/MS. Bioanalysis 8:11, pages 1133-1144.
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H.W.R. Li, S.S.T. Lo, E.H.Y. Ng & P.C. Ho. (2016) Efficacy of ulipristal acetate for emergency contraception and its effect on the subsequent bleeding pattern when administered before or after ovulation. Human Reproduction 31:6, pages 1200-1207.
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Joseph B. Stanford. (2016) Population, Reproductive, and Sexual Health: Data Are Essential Where Disciplines Meet and Ideologies Conflict. Frontiers in Public Health 4.
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María del Mar García-Calvente & Vicente Lomas-Hernández. (2016) Anticoncepción de urgencia y objeción de conciencia: un debate sin cerrar. Gaceta Sanitaria 30:2, pages 91-93.
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. (2016) Emergency Contraception for Adolescents and Young Adults: Guidance for Health Care Professionals. Journal of Adolescent Health 58:2, pages 245-248.
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Elena Rosato, Manuela Farris & Carlo Bastianelli. (2016) Mechanism of Action of Ulipristal Acetate for Emergency Contraception: A Systematic Review. Frontiers in Pharmacology 6.
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Siân Taylor. (2015) Emergency contraception. InnovAiT: Education and inspiration for general practice 8:12, pages 737-743.
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Elizabeth G. Raymond & Kelly Cleland. (2015) Emergency Contraception. New England Journal of Medicine 372:14, pages 1342-1348.
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