Crest Pro-Health can brown your teeth

I never had a big issue with bad breath (or else my friends failed to point it out) so it was not until relatively recently that I started thinking about mouthwash. Specifically, it was when my dentist began recommending it to patients as a supplement to brushing (NOT a replacement, I was told 10 times in one visit) to help ensure against gum disease. Well, I hated the smell and taste of listerine and liked the idea of an alcohol-free mouthwash. So I invested in Crest Prohealth. I decided this week to change brands after reading this horror story which is repeated by many, many reviewers on Amazon.Com

At the beginning mouthwash was fine. Nice not having the alcohol burn and the breath, that my girlfriend hated. So that was nice.
But after extended use for a month it stained in between my teeth brown. It looked terrible and it cost me a one hundred dollar trip to the dentist to scrape that junk off. The dentist advised that it was my mouthwash after hearing it was this Crest mouthwash that I was using.

Again, click over to Amazon.Com for more horror stories. It sounds like, in general, occasional use is not an issue, but if you plan to use it more than once or twice a week, you risk the dreaded brown smile. I am trying ACT! now, so we'll see how it goes.