I think it's because of a bullshit FDA rule if I'm remembering correctly. Toothpaste is allowed to have fluoride as an active ingredient without FDA approval, so it's cheap to put a new fluoride toothpaste on the market. Other active ingredients need FDA approval though so no company bothers Edit: I was remembering incorrectly

I think it's because of a bullshit FDA rule if I'm remembering correctly. Toothpaste is allowed to have fluoride as an active ingredient without FDA approval, so it's cheap to put a new fluoride toothpaste on the market. Other active ingredients need FDA approval though so no company bothers