4-Hydroxycoumarin o se vailaʻau vaʻaia faʻaaogaina i le gaosiga o vailaʻau faʻamaʻi. O lenei ituaiga o 4-hydroxycoumarin derivative o se faʻafeagai o le vaitamini K ma se faʻamaʻi faʻamaʻi gutu. E le gata i lea, o le 4-hydroxycoumarin o se vaeluaga o nisi o rodenticides ma e tele lona aoga suʻesuʻega i le atinaʻeina o vailaʻau faʻamaʻi. 4-Hydroxycoumarin o se mea manogi foi, ma coumarins e salalau lautele i le malo o laau. E masani ona faʻaaogaina i le tuʻufaʻatasia o vailaʻau antithrombotic ma 4-hydroxycoumarin type anticoagulant rodenticides (warfarin, dalon, ma isi).
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