Microgenest contraceptive tablets for women. Microgenest tablets contain contraceptive compounds, namely levonorgestrel and enyl estradiol, which are combined substances that work by inhibiting gonadotropins and thus preventing ovulation and preventing pregnancy. Other changes include changes in the cervical mucus that make it more difficult for sperm to enter the uterus and changes in the lining of the uterus that reduce the possibility of implantation of the egg.