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  • Title: Medical abortion alternatives to mifepristone.
    Author: Creinin MD, Pymar HC.
    Journal: J Am Med Womens Assoc (1972); 2000; 55(3 Suppl):127-32, 150. PubMed ID: 10846321.
    Abstract:
    Social and political constraints have prohibited the use of mifepristone in most countries. As a result, researchers, clinicians, and women throughout the world have pushed for the development of alternative medical abortion regimens. Methotrexate (both oral and intramuscular) combined with misoprostol has been under investigation since 1993, with complete abortion rates similar to mifepristone regimens for pregnancies up to 49 days' gestation. Thousands of women have had safe medical abortions in their own homes using these medications. The overall abortion process using methotrexate and misoprostol takes longer, however, with 20% to 30% of women waiting up to five weeks for the abortion to occur. More recently, misoprostol-only regimens have been proposed for medical termination of pregnancy. The efficacy of these misoprostol regimens has been reported in the same range as those combining mifepristone or methotrexate with misoprostol, although other investigators have been unable to confirm these results. Additionally, a few small studies have tested tamoxifen combined with misoprostol, with mixed results. Continued research is necessary to ensure that reported efficacy rates for all proven medical abortion regimens are true for various populations of women.
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