• SorryQuick@lemmy.ca
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    8 months ago

    Looking at the wikipedia page for some of those, it seems to be intravenously. For example, Botox (the last one): “A toxin is 1.3–2.1 ng/kg intravenously or intramuscularly, 10–13 ng/kg when inhaled, or 1000 ng/kg when taken by mouth”