Cool to see that get through finally after decades of people talking about this . (& for its effect on teeth, my sensitivity went away when i stopped using toothpaste with this in it)
Taurine gives protection against fluoride (if dont get along with it well at 500mg lower doses probably work well too, even <100mg is protective against mercury toxicity)
and ~300mg GABA can reverse most of its impact on thyroid (lower dose works best) https://www.researchgate.net/publication/330609672_Analysis_of_the_protective_effects_of_g-aminobutyric_acid_during_fluoride-induced_hypothyroidism_in_male_Kunming_mice