ETHINYLESTRADIOL#LEVONORGESTREL

G03AA07(WHO) CA:℞-onlyUS:℞-only 39366-37-5 D04482 Ethinylestradiol/levonorgestrel(EE/LNG) is acombined birth control pillmade up ofethinylestradiol(anestrogen) andlevonorgestrel(aprogestin).It is used forbirth control, symptoms ofmenstruation,endometriosis, and asemergency contraception.It is taken by mouth.Some preparations of EE/LNG additionally contain aniron supplementin the form offerrous bisglycinateorferrous fumarate.​‍​​​​​‍​‍‍‍‍​‍‍ Side effects can includenausea, headache,blood clots, breast pain, depression, and liver problems.Use is not recommended during pregnancy, the initial three weeks after childbirth, and in those at high risk of blood clots.However, it may be started immediately after amiscarriageorabortion.Smoking while using combined birth control pills is not recommended.It works by stoppingovulation, making themucusat the opening to the cervix thick, and making theuterusnot suitable forimplantation. Ethinylestradiol/levonorgestrel has been approved for medical use in the United States since 1982.It is on theWorld Health Organization's List of Essential Medicines.It is available as ageneric medication.It is marketed under many brand names.In 2023, it was the 138th most commonly prescribed medication in the United States, with more than 4million prescriptions.