Also known as Plan B, levonorgestrel is a progestin hormonal contraception. It prevents ovulation during the menstrual cycle. It prevents fertilization by thickening the vaginal fluid and changing the lining of the uterus to prevent implantation.
Used as emergency contraception. This is after the failure of primary birth control such as a broken condom. It’s used with the intrauterine device as a long-term contraception method. Some of its off-label indications include; endometrial hyperplasia, menorrhagia, endometriosis, and menopausal hormone therapy.
Plan B is taken within 72hours of unprotected sexual activity or failure of a primary contraception method. 2 tablets taken once or 1 tablet after every 12 hours. When vomiting occurs within 2 hours of taking the medication, repeat the dose. It can be purchased over the counter without a prescription.
Plan B should not be taken when taken other drugs such as barbiturates or St.John Wort or when one is allergic to it. It’s contraindicated in pregnancy.
These include; menstrual abnormalities such as amenorrhea, dysmenorrhea and oligomenorrhea, headaches, ane, nausea vomiting, dizziness, fatigue, and lower abdominal pains.
It’s a vital drug in ensuring there is Planned Parenthood. It is not advised as regular contraception.
Levonorgestrel Oral : Uses, Side Effects, Interactions, Pictures, Warnings & Dosing. (n.d.). Retrieved August 28, 2020, from https://www.webmd.com/drugs/2/drug-17833-1347/levonorgestrel-oral/levonorgestrel-1-5-mg-oral/details
Vrettakos, C., & Bajaj, T. (2020). Levonorgestrel. In StatPearls [Internet]. StatPearls Publishing.