What is the mechanism of action (MOA) of emergency contraceptives?
Understand the Problem
The question asks for the mechanism of action (MOA) of emergency contraceptives. Understanding the MOA of emergency contraceptives involves identifying the primary way these medications prevent pregnancy after unprotected sex.
Answer
Emergency contraceptive pills prevent pregnancy by preventing or delaying ovulation.
Emergency contraceptive pills primarily prevent pregnancy by preventing or delaying ovulation. Some types, like the copper IUD, prevent fertilization by causing a chemical change in sperm and egg before they meet.
Answer for screen readers
Emergency contraceptive pills primarily prevent pregnancy by preventing or delaying ovulation. Some types, like the copper IUD, prevent fertilization by causing a chemical change in sperm and egg before they meet.
More Information
The effectiveness of emergency contraception diminishes with time after intercourse, so it is important to use it as soon as possible.
Tips
A common misconception is that emergency contraception induces abortion, however this is not the case.
Sources
- Emergency contraception -- mechanisms of action - PubMed - pubmed.ncbi.nlm.nih.gov
- Mode of Action - AIIMS - aiims.edu
- Emergency contraception - Wikipedia - en.wikipedia.org
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