Progesterone vaginal ring, also known as progesterone-only vaginal ring, is a form of vaginal ring used for birth control when breastfeeding.[1] Use can begin at four weeks and continue for at least up to a year following childbirth.[4][3] Failure rates with usual use is about 1.5 per 100 women.[1] It is used within the vagina with one ring lasting three months.[4] The woman is able to place and remove the ring herself.[3] It is sold under the brand names Progering among others.[5]
^ abcdeWorld Health Organization (2015). The selection and use of essential medicines. Twentieth report of the WHO Expert Committee 2015 (including 19th WHO Model List of Essential Medicines and 5th WHO Model List of Essential Medicines for Children). Geneva: World Health Organization. pp. 334–336. hdl:10665/189763. ISBN9789241209946. ISSN0512-3054. WHO technical report series;994.
^World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
^World Health Organization (2021). World Health Organization model list of essential medicines: 22nd list (2021). Geneva: World Health Organization. hdl:10665/345533. WHO/MHP/HPS/EML/2021.02.