Sanofi Xyzal OTC Antihistamine Claims Lose Second Challenge In Six Months

Sanofi will modify claims in social media ads that its Xyzal Allergy 24HR antihistamine is 'twice as fast' as Bayer's s Claritin after the US National Advertising Division found the statement is not supported by head-to-head testing. NAD also recommended the firm discontinue the claim the product provides “relief that starts at hour 1 instead of hour 2.”