Natrual fluoride is safe... But not the man made kind, that they are shoving down our throats and there has never been any proof that it helps prevent cavities. They're liars. Where did the invention come from? Nazi prison camps - to keep prisoners submissive and dumbed down - compliant. Is where it originated from imagine that. OH... and let not forget that all anti depressants are made with you guessed it... fluoride. As well as cipiro and some other newer antibiotics contain it as well! They are seriously trying to kill us with their genocide program every which way possible - air, water, food, vaccines, patented viruses w/ the exception of this current one being fake of course but that wasn't the original plan! 5 G wifi, cellphones the list is a mile long. The real question is... what haven't they tried to kill us with... and what haven't they lied about. At one time, smoking cigarettes was safe....... SUGAR omg they darn well know white refined sugar is nothing but a poison!