Dose of Nonoxynol-9 May Influence Spermicide Effectiveness
New findings from Family Health International and the National Institute of
Child Health and Human Development show that the amount of nonoxynol-9 (N-9)
in a vaginal spermicidal gel may influence how well it prevents pregnancy.
The form in which the N-9 is delivered, however, does not appear to have an
influence. Results of this clinical trial of more than 1,500 women at 14
sites throughout the United States are reported in the March 2004 issue of
Obstetrics and Gynecology. To read more, see
http://www.fhi.org/en/AboutFHI/News+Releases/March102004N9.htm
<http://www.fhi.org/en/AboutFHI/News+Releases/March102004N9.htm> .
Source
Raymond EG, Chen PL, Luoto J, The Spermicide Trial Group. Contraceptive
effectiveness and safety of five nonoxynol-9 spermicides: a randomized
trial. Obstet Gynecol 2004;103(3):430-39.
David Hock
Senior Information Projects Coordinator
Family Health International
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