Cerazette is used to prevent pregnancy. Cerazette contains a small amount of one type of female sex hormone, the progestogen desogestrel. For this reason Cerazette is called a progestogen-only-pill (POP), or a mini-pill. Contrary to the combined pill, the POP or mini-pill does not contain an estrogen hormone next to the progestogen. Most POPs or minipills work primarily by preventing the sperm cells from entering the womb but do not always prevent the egg cell from ripening, which is the primary action of combined pills. Cerazette prevents pregnancy by preventing the egg cell from ripening.

As a result, Cerazette provides high contraceptive efficacy. In contrast to the combined pill, Cerazette can be used by women who do not tolerate estrogens and by women who are breast-feeding. A disadvantage is that vaginal bleeding may occur at irregular intervals during the use of Cerazette. You also may not have any bleeding at all.