minipill

The minipill, or progestin-only pill (POP), is a type of oral contraceptive that contains no estrogen. It is designed to prevent pregnancy by thickening cervical mucus, thinning the lining of the uterus, and, in some users, suppressing ovulation.

Compared with combined hormonal contraceptives, the minipill has no estrogen. This makes it a common choice for people who are breastfeeding, have estrogen sensitivities, or cannot take estrogen. It is generally safe for most users but is less forgiving of missed or late doses than pills that include estrogen.

To be effective, the minipill must be taken at roughly the same time every day. If a pill is taken late, protection can be reduced, and a backup method or additional precautions may be needed after the missed dose.

Common effects include irregular vaginal bleeding, especially in the first months, lighter or absent periods (amenorrhea), breast tenderness, nausea, and mood changes. Serious side effects are rare but can include signs of blood clots or liver problems; seek medical attention if unusual symptoms occur.

Starting use is possible at any time if you are not pregnant, but the timing may influence how quickly you are protected. A clinician can advise on whether to use backup contraception during the first days of use. The minipill is available by prescription in many countries and is one of several progestin-only methods, including injections and implants.