The Wellness Shower Filter converts toxic fluoride to a safer form of calcium fluoride in addition to removing chlorine and other toxins.I found several CureZone Posts that confirm that calcium 'neutralizes' or reduces the toxicity of fluoride (thanks Grzbear!):
We have the Wellness Shower Filter and absolutely love it! I haven't noticed that it has reduced the water pressure at all. It has a backflow feature that allows you to periodically flush the filter, which gives it a longer life than most filters...up to 2 years. So when you consider that you can use it for 2 years, it makes it less expensive than most of the other 'top of the line' filters.