Ferulic acid ndi mankhwala achilengedwe omwe amapezeka muzomera zosiyanasiyana monga Angelica sinensis, Ligusticum chuanxiong, horsetail ndi mankhwala achi China, ndipo adapeza chidwi chifukwa cha zopindulitsa zake. Amapezekanso mu mankhusu a mpunga, nyemba za pandan, chimanga cha tirigu ndi chimanga cha mpunga. Izi mofooka...
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