drospirenone 3 mg / ethinyl estradiol 0.03 Yasmin (drospirenone and ethinyl estradiol) prevents ovulation (the release of an egg from an ovary) and also cause changes in your cervical and uterine lining, making it harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus. Yasmin is used as contraception to prevent pregnancy.