Is mouthwash supposed to do this?

August 7, 2009 4:49:06 AM PDT
A Detroit-area lawyer is suing Procter & Gamble, saying his teeth have brown stains after he used Crest Pro-Health mouthwash.

Mark Rossman's law partners filed the lawsuit yesterday in federal court in Detroit.

He says P&G should put a warning on the bottle.

P&G spokeswoman Laura Brinker declined to comment on the lawsuit but says "99.9 percent" of users have not complained.

On a Web page, the company says stains may be a sign the rinse is working because dead germs may be accumulating on teeth.