<%@include file="menu.html" %>

Welcome to the Encyclopedia of Saskatchewan. For assistance in exploring this site, please click here.

If you have feedback regarding this entry please fill out our feedback form.

Contraceptive Patch

Research methodology developed in 2000 by Dr. Roger Pierson, a University of Saskatchewan professor of obstetrics and gynecology, helped establish the contraceptive patch as a more effective means of birth control than the contraceptive pill. Johnson and Johnson now market the patch under the Ortho Erva brand name. Dr. Pierson's methodology was subsequently adopted as a standard for measuring birth control effectiveness in Europe and the United States. There were two key phases of the testing: comparing the effectiveness of the patch with traditional oral contraceptives, and determining the most effective size and dose. A problem with oral contraceptives is that the release of hormones fluctuates dramatically throughout the day; by comparison, the patch releases a steady flow of hormones throughout the entire week. Because the hormone dose is constant, follicle growth in the ovaries is halted much sooner; while follicles may be reduced to 17 mm or more with some pills, with the contraceptive patch they are inhibited to a size of only 6 mm, making the release of an egg that much more unlikely. Another problem with the pill is that is must be taken every day at the same time; unlike oral contraceptives, the patch does not require daily attention, and is simply placed on the body once a week.

Joe Ralko

Print Entry
This web site was produced with financial assistance
provided by Western Economic Diversification Canada and the Government of Saskatchewan.
University of Regina Government of Canada Government of Saskatchewan Canadian Plains Research Center
Ce site Web a été conçu grâce à l'aide financière de
Diversification de l'économie de l'Ouest Canada et le gouvernement de la Saskatchewan.