I don’t know anything about whether this product causes heart attacks, but any mouthwash containing cetylpyridinium chloride may cause horrible stains on your teeth. Check out the customer reviews on Amazon, where this mouthwash has a one star average rating. I can testify from personal experience that this phenomenon is real, and not some negative marketing campaign instigated by their competitors: I used this mouthwash for less than a month, and it took my dental hygienist almost an hour to remove the stains.
I don’t know anything about whether this product causes heart attacks, but any mouthwash containing cetylpyridinium chloride may cause horrible stains on your teeth. Check out the customer reviews on Amazon, where this mouthwash has a one star average rating. I can testify from personal experience that this phenomenon is real, and not some negative marketing campaign instigated by their competitors: I used this mouthwash for less than a month, and it took my dental hygienist almost an hour to remove the stains.