Source: Associated Press, (USA Today)

Persistent consumer complaints are causing some stains on a Procter & Gamble’s (PG) Crest.

Crest Pro-Health Rinse hit the market three years ago as an alcohol-free mouthwash that not only freshens breath but fights oral maladies such as gingivitis and plaque. The strong-selling product has caused some users to report discoloration of their teeth and numbing taste.

P&G says “99.99%” of users have had no complaints and that any discoloration or aftertaste is temporary. But NBC’s Today show reported Wednesday that the complaints have led to a consumer lawsuit alleging fraud and to further study by the Food and Drug Administration, which approved the product.

Read Full Article: Crest rinse fights off customer complaints