What does Yaz do?

Yaz increases your body’s levels of drospirenone and ethinyl estradiol, the two hormones it contains. By increasing these hormones, Yaz can stop ovulation, the process of eggs being released from your ovaries. 

Yaz also changes the lining of your uterus and the mucus surrounding your cervix, to make it more difficult for sperm to enter into your uterus and cause pregnancy.