Ko·-1-kái thun-chia̍h kòe-liōng ê fluoride ē-tit ín-khí kip-sèng ê hu̍t-tiòng-to̍k, it-poaⁿ lâi-kóng, hō·-lí-sí ê che-liōng (CLD, certainly lethal dose) sī 32~64 mg/kg, an-choân jím-siu che-liōng (STD, safely tolerated dose) sī 8~16 mg/kg, khó-lêng tiòng-to̍k che-liōng (PTD, probably toxic dose) sī 5mg/kg. Kip-sèng hu̍t-tiòng-to̍k ê te̍k-cheng sī beh-thò·, áu-thò·, phak-tó·-thiàⁿ, làu-sái. Ūi-tio̍h phiah-bián gín-á hu̍t-tiòng-to̍k, 6-hòe í-āu chiah ē-tàng sú-iōng hâm-hu̍t lo̍k-chhùi-chúi, 2~6-hòe--ê sú-iōng hâm-hu̍t khí-ko mā-tio̍h-ài tī tōa-lâng ê kàm-tho̍k chi-hā chiah ē-sài--chit. Siat-sú bô-sió-sim thun-chia̍h hu̍t-hòa-bu̍t, ē-tit ēng gû-leng he̍k hâm aluminium/magnesium ê chè-sng-chē (ūi-io̍h) lâi kiám-chió hu̍t ê khip-siu, ah-nā tōa-liōng thun-chia̍h tio̍h-ài sûi sàng-khí pēⁿ-īⁿ chhui-thò· kap chìn-1-pō· chhú-lí.