when i did the fluoride run through, i pointed out that fluoride may uptake various metals into the liver and that sufficient betaine is the best way to clear it out.

if you want to fight aluminum, betaine may be your best trick, as well:

https://www.researchgate.net/publication/289078440_Betaine_reverses_toxic_effects_of_aluminium_Implications_in_Alzheimer's_disease_AD_and_AD-like_pathology

this is also interesting, as fluoride is certainly much less dangerous than aluminum:

https://pubmed.ncbi.nlm.nih.gov/1617567/