"Nov. 26, 2012 -- Pediatricians should routinely talk to their teen patients about emergency birth control and write them prescriptions for “morning-after pills” so they can get them quickly if necessary, according to a new policy statement from t"...
Mode of Action
ORTHO MICRONOR® (norethindrone) progestin-only oral contraceptives prevent conception by suppressing ovulation in approximately half of users, thickening the cervical mucus to inhibit sperm penetration, lowering the midcycle LH and FSH peaks, slowing the movement of the ovum through the fallopian tubes, and altering the endometrium.
Serum progestin levels peak about two hours after oral administration, followed by rapid distribution and elimination. By 24 hours after drug ingestion, serum levels are near baseline, making efficacy dependent upon rigid adherence to the dosing schedule. There are large variations in serum levels among individual users. Progestin-only administration results in lower steady-state serum progestin levels and a shorter elimination half-life than concomitant administration with estrogens.
Last reviewed on RxList: 7/24/2008
This monograph has been modified to include the generic and brand name in many instances.
Additional Ortho Micronor Information
Ortho Micronor - User Reviews
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