I'm fairly conspiracy-minded, but fluoride is prescribed for ingestion in some cases: https://en.wikipedia.org/wiki/Fluoride_therapy https://en.wikipedia.org/wi

I'm fairly conspiracy-minded, but fluoride is prescribed for ingestion in some cases: https://en.wikipedia.org/wiki/Fluoride_therapy https://en.wikipedia.org/wiki/Fluoride_therapy I was prescribed fluoride tablets by my dentist as kid.