The progestogen-only pill (POP) is an effective method of contraception if used correctly. It often used to be used when the combined pill (which contains oestrogen as well as a progestogen) was not suitable for a particular woman. However, the development of newer and better progestogen-only pills means that they are often chosen instead of the combined pill. It can be used safely during breastfeeding.
This is a companion discussion topic for the original article at https://patient.info/sexual-health/hormone-pills-patches-and-rings/progestogen-only-contraceptive-pill-pop