CERAZETTE - Medsafe
https://www.medsafe.govt.nz/Consumers/cmi/c/cerazette.pdfCerazette ® is called a progestagen-only-pill (POP), or a mini-pill. Contrary to combined pills, mini-pills do not contain an oestrogen hormone next to the progestagen. Most mini-pills work primarily by preventing the sperm cells from entering the womb but, unlike combined pills, they do not always prevent an egg cell from ripening. Cerazette ®