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Emergency contraception (EC) is a birth control measure, used after sexual intercourse to prevent pregnancy.. There are different forms of EC. Emergency contraceptive pills (ECPs), sometimes simply referred to as emergency contraceptives (ECs), or the morning-after pill, are medications intended to disrupt or delay ovulation or fertilization, which are necessary for pregnancy.
Levonorgestrel is a hormonal medication which is used in a number of birth control methods. [3] [7] It is combined with an estrogen to make combination birth control pills. [8]As an emergency birth control, sold under the brand names Plan B One-Step and Julie, among others, it is useful within 72 hours of unprotected sex.
Emergency contraception pills ("morning after pills") are taken at the time of intercourse, or within a few days afterwards: Levonorgestrel, sold under the brand name Plan B; Ulipristal acetate; Mifepristone and misoprostol, when used in combination, are more than 95% effective during the first 50 days of pregnancy.
It is designed to be used within 72 hours of unprotected sexual intercourse because it works by inhibiting ovulation. [1] Typically, the Yuzpe regimen uses several doses of combined oral contraceptive pills. It may be preferred in locations where other forms of emergency contraception are unavailable or accessing emergency contraception carries ...
Also referred to as the doxy PEP regime, the CDC recommends that one 200-milligram dose of doxycycline be taken within 72 hours after oral, vaginal, or anal sex without a condom or other barrier ...
A single preovulatory 10-mg dose of mifepristone delays ovulation by three to four days and is as effective an emergency contraceptive as a single 1.5-mg dose of the progestin levonorgestrel. [ 55 ] In women, mifepristone at doses greater or equal to 1 mg/kg antagonizes the endometrial and myometrial effects of progesterone.
Some people should consider taking an antibiotic as a morning-after pill to try to prevent certain sexually transmitted diseases, U.S. health officials recommended Tuesday. The Centers for Disease ...
However, it may be started immediately after a miscarriage or abortion. [5] Smoking while using combined birth control pills is not recommended. [1] It works by stopping ovulation, making the mucus at the opening to the cervix thick, and making the uterus not suitable for implantation. [1]