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HCET Home > Resources > EC Home > Info for Pros > Mechanism: How EC Works
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Mechanism: How EC Works
Preventing ovulation is consistently cited as the primary mechanism of action of progestin-only EC. Reported studies are inconsistent as to whether or not the mechanism of action also includes preventing implantation.- American College of Obstetricians and Gynecologists' Frequently Asked Questions about Hormonal Approaches to Emergency Contraception
- American Family Physicians' Emergency Contraception
- Contraception Online - Emergency Contraception
- Geneva Foundation for Medical Education and Research - Mechanism of Action of Mifepristone and Levonorgestrel for Emergency Contraception
- Human Reproduction Update - Mechanisms of action of mifepristone and levonorgestrel when used for emergency contraception
- IngentaConnect - The effects of seven monophasic oral contraceptive regimens on hemostatic variables: conclusions from a large randomized multicenter study
- International Consortium for Emergency Contraception - How Do Emergency Contraceptive Pills Work to Prevent Pregnancy?
- Obstetrics and Gynecology - Emergency Contraception With Mifepristone and Levonorgestrel: Mechanism of Action
- PATH - Emergency Contraception Questions and Answers for Non-clinical Providers
- Plan B (Levonorgestrel) Emergency Contraception: Healthcare Professionals
- Population Council's Population Briefs - Emergency Contraception’s Mode of Action Clarified
- The Religion Consultation on Population, Reproductive Health and Ethics - The Politics of Emergency Contraception
- Reproductive Health Online (ReproLine) - Introduction: Contraception after Intercourse
