Yerba Mate and Fluoride
If you are concerned about the high fluoride content in green tea, yerba mate might be a good alternative. Yerba mate has a lot less fluoride than green tea. An 8 oz cup of EcoTeas yerba mate with one 2g tea bag yields 0.021 mg of fluoride, which is only one-fifth the fluoride content of the average cup of green tea brewed at similar strength.