"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"...
Mode of Action
Combination oral contraceptives act by suppression of gonadotropins. Although the primary mechanism of this action is inhibition of ovulation, other alterations include changes in the cervical mucus (which increase the difficulty of sperm entry into the uterus) and the endometrium (which reduce the likelihood of implantation).
Last reviewed on RxList: 5/21/2008
This monograph has been modified to include the generic and brand name in many instances.
Additional Lo Ovral Information
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