Pfizer sues P&G

Pfizer is suing Procter & Gamble, alleging that P&G is making false claims for its Crest Pro Health mouthwash, causing harm to Pfizer's Listerine.

Pfizer said in the lawsuit that P&G falsely claims that four out of five dentists recommend Crest Pro Health for reasons related to the product's efficacy, superiority or other characteristics. Yet, it added, P&G ''has no substantiation for either claim and neither statement is true.''