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Release of progestin-only emergency contraception
1Department of Obstetrics/Gynecology, Magee-Women's Hospital, 300 Halket Street, Pittsburgh, PA 15213, USA. jillwashDC@aol.com
Current Women'S Health Reports
|July 13, 2002
Summary
Levonorgestrel-only emergency contraception is more effective and better tolerated than the Yuzpe regimen, preventing 85% of unintended pregnancies. Earlier treatment significantly improves emergency contraception effectiveness, highlighting the need for better access and education.
Area of Science:
- Reproductive Health
- Pharmacology
- Clinical Trials
Background:
- Progestin-only emergency contraception (EC) has been available since 1999.
- The Yuzpe regimen was the previous standard of care for EC.
- Prepackaged EC kits enhance accessibility and convenience.
Purpose of the Study:
- To compare the efficacy and tolerability of levonorgestrel-only EC versus the Yuzpe regimen.
- To evaluate the impact of timing on emergency contraception effectiveness.
- To identify barriers to timely EC access.
Main Methods:
- Multicenter randomized trial comparing levonorgestrel-only EC with the Yuzpe regimen.
- Data collection on pregnancy prevention rates and patient tolerance.
- Analysis of factors influencing EC initiation within 72 hours.
Main Results:
- Levonorgestrel-only EC regimen demonstrated significantly higher effectiveness (85% pregnancy prevention) compared to the Yuzpe regimen (57%).
- The levonorgestrel-only regimen was better tolerated by users.
- Emergency contraception is most effective when initiated as soon as possible after unprotected intercourse.
Conclusions:
- Levonorgestrel-only emergency contraception is a superior alternative to the Yuzpe regimen.
- Increased accessibility and convenience of prepackaged kits are noted.
- Significant barriers to timely EC access persist, necessitating improved educational and distribution strategies.