Levonorgestrel magani ne na hormonal wanda ake amfani dashi a yawancin hanyoyin hana haihuwa. Ana hada shi da isrogen don yin hadin gwiwar maganin hana haihuwa. A matsayin maganin hana haihuwa na gaggawa, ana siyar da shi ƙarƙashin alamar sunan Plan B da sauransu, yana da amfani a cikin sa'o'i 120 na jima'i mara kariya. Yawancin lokacin da ya wuce tun lokacin jima'i, ƙananan maganin ya zama ƙasa da tasiri, kuma ba ya aiki bayan ciki (shigarwa) ya faru. Yana rage yiwuwar daukar ciki da kashi 57 zuwa 93%. A cikin na'urar intrauterine (IUD), irin su Mirena da sauransu, yana da tasiri don rigakafin dogon lokaci na ciki. Hakanan ana samun shuka mai sakin levonorgestrel a wasu ƙasashe. Abubuwan da aka saba amfani da su sun haɗa da tashin zuciya, taushin ƙirji, ciwon kai, da ƙaruwa, raguwa, ko zubar jinin haila na yau da kullun. Lokacin da aka yi amfani da shi azaman maganin hana haihuwa na gaggawa, idan ciki ya faru, babu wata shaida cewa amfani da shi yana cutar da jariri. Yana da aminci don amfani yayin shayarwa.