It removes flouride as well, for better or worse -- one of very few available filters which do. (Some think flouride is good and some think it's bad.)
I have it, and purely ergonomically, it's the best filter I've ever used. It's also quite expensive with expensive filters that need replacing frequently.
This isn't a some think it's good and some think it's bad kind of thing. Just like with climate change there's no legitimate other side.
Fluoride in your water supply is key to reducing tooth decay. Every medical association every scrap of evidence that we have says it's useful and important. It cuts tooth decay by 25% or so at all ages. You're doing yourself and your family a massive disservice by not adding it back in, never mind causing yourself a lot of pain and losing a lot of money in the long term.
I think it's ironic that people don't listen to doctors when they suggest simple proven methods that have a worldwide consensus behind them and unlimited evidence. But then are willing to let those same doctors drill into their skulls when they're in pain. Don't be that person :)
Nanohydroxypatite seems more effective than fluoride. But stannous fluoride looks like it has more overall benefits than sodium fluoride if you want to go to the fluoride route.
Some toothpaste have both, Dr jens for example which does have the 10% concentration shown most effective in clinical trials
https://www.clearlyfiltered.com/pages/performance-data-for-t...