National Advertising Division (NAD)The National Advertising Division monitors national advertising in all media, enforcing high standards of truth and accuracy. NAD examines advertising claims made for goods and services as diverse and critical as telecommunications, infant nutrition, over-the-counter medication and dietary supplements and on a wide variety of issues including clinically proven or efficacy claims, environmental, “green” or natural claims, product demonstrations, the use of endorsements or influencer marketing (including their disclosures), consumer reviews or sponsored content. NAD accepts complaints from consumers, competing advertisers and local Better Business Bureaus. NAD’s decisions represent the single largest body of advertising decisions in the United States.