Levonorgestrel – ethinyl estradiol is a progestin (levonorgestrel) and estrogen (ethinyl estradiol) combination birth control pill used to prevent pregnancy. The ingredients of this medication primarily work by preventing ovulation (the release of an egg from an ovary). This medication also causes changes in the mucus of the cervix, which make it difficult for sperm to penetrate and for an egg to implant.
