Symonette

Symonette is used to prevent pregnancy. Symonette contains a small amount of one type of female sex hormone, the progestogen desogestrel. For this reason Symonette is called a progestogen-only-pill (POP). Contrary to the combined pill, the POP does not contain an oestrogen hormone next to the progestogen.
Most POPs 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. Symonette is distinct from most POPs in having a dose that in most cases is high enough to prevent the egg cell from ripening. As a result, Symonette provides high contraceptive efficacy.
In contrast to the combined pill, Symonette can be used by women who do not tolerate oestrogens and by women who are breast feeding