Description and Brand Names - Mayo Clinic - Mayo Clinic
https://www.mayoclinic.org/drugs-supplements/levonorgestrel-intrauterine-route/description/drg-20073437
webMar 1, 2024 · Levonorgestrel-releasing intrauterine system is a device that contains the female hormone, levonorgestrel. It is placed in the uterus (womb) where it slowly releases the hormone to prevent pregnancy for up to 3 years for Skyla®, up to 5 years for Kyleena®, or up to 8 years for Liletta® and Mirena®. It works by stopping a woman's egg from ...
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