Listerine controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2007
Agent Cool Blue contamination recall
Potential contamination led McNeil-PPC to recall Listerine Agent Cool Blue products sold since launch. The disclosure stated that other Listerine products were not affected.
2005
FTC challenge over floss-substitute advertising
The Federal Trade Commission alleged that Listerine advertising misleadingly suggested the mouthwash was as effective as flossing for reducing plaque and gingivitis. The case focused on substantiation and the way comparative health claims were communicated, rather than on a finding that all use of Listerine was ineffective.
2000
Royalty agreement litigation
Warner-Lambert challenged continuing royalty obligations arising from the original Lawrence licensing agreement, arguing that publication of the formula had reduced the agreement's value. The court upheld the royalty arrangement while manufacturing continued.
1976
Regulatory challenge to cold and sore-throat claims
The FTC concluded that Listerine advertising had misleadingly implied that the product could prevent or alleviate colds and sore throats. Warner-Lambert was required to stop the claims and provide corrective advertising.
1976
FTC action over cold and sore-throat claims
The U.S. Federal Trade Commission determined that advertising claims suggesting Listerine could prevent or relieve colds and sore throats were misleading. The manufacturer was required to stop those claims and use corrective language in subsequent advertising.