Liothyronine suna ne da ke nufin wani nau'i na roba na hormone triiodothyronine (T3), wanda glandan thyroid ke samar da shi ta dabi'a a jikin mutum. Ana amfani da Liothyronine a matsayin magani don magance yanayi irin su hypothyroidism, yanayin da glandar thyroid ba ya samar da isasshen hormones na thyroid, da myxedema coma, wani nau'i mai tsanani na hypothyroidism. Ana kuma amfani da Liothyronine wajen maganin wasu nau'in ciwon daji na thyroid.