"The U.S. Food and Drug Administration today announced that it has approved an amended application submitted by Teva Women's Health, Inc. to market Plan B One-Step (active ingredient levonorgestrel) for use without a prescription by women 15 years"...
Combination oral contraceptives act by suppression of gonadotrophins. Although the primary mechanism of this action is inhibition of ovulation, other alterations include changes in the cer-vical mucus (which increase the difficulty of sperm entry into the uterus) and the endometrium (which may reduce the likelihood of implantation).
Last reviewed on RxList: 12/23/2008
This monograph has been modified to include the generic and brand name in many instances.
Additional Low-Ogestrel Information
Report Problems to the Food and Drug Administration
Find out what women really need.