Coverage dated July 21, 2026 to July 22, 2026

Novo Nordisk sues rival Eli Lilly over ‘misleading' weight-loss drug advertising

Headline from NBC 5 Dallas-Fort Worth

A Lilly Biotechnology Center in San Diego, California, and Novo Nordisk flags and logo displayed outside the company’s facility in Mainz, Germany.

NBC 5 Dallas-Fort Worth's own description from its feed. We collect headlines and these descriptions, not full articles; read the original reporting below.

Reports & sources

16 articles, oldest first.

  1. STAT

    STAT+: Novo Nordisk sues Eli Lilly over GLP-1 drug ads it calls ‘deceptive’ (opens STAT)

    Published

    STAT's feed description

    Novo Nordisk sued Eli Lilly for allegedly running a “deceptive” ad campaign that uses “outdated clinical trials” to make its obesity and diabetes drugs appear more effective.

  2. Quartz

    Novo Nordisk is suing Eli Lilly over ads it says mislead consumers on weight loss drug efficacy (opens Quartz)

    Published

    Quartz's feed description

    Novo says Lilly's TV and social media campaigns cite outdated trial data to make Zepbound and Mounjaro look more effective than rival injections

  3. NBC News

    Novo Nordisk Sues Eli Lilly Over Weight Loss Drug Advertisement (opens NBC News)

    Published

    NBC News's feed description

    Novo Dordisk, which makes Ozempic and Wegovy, has filed a federal lawsuit against Eli Lilly, accusing its competitor of false advertising and unfair competition. Novo Nordisk challenges national ad campaigns from Eli Lilly that compare GLP-1 drugs from both companies, saying that Lilly intentionally…

  4. Forbes

    Novo Nordisk Sues GLP-1 Rival Eli Lilly For Misleading Advertising (opens Forbes)

    Published

    Forbes's feed description

    The lawsuit, filed in federal court Tuesday, accuses Eli Lilly of using outdated data in advertising campaigns.

  5. STAT

    STAT+: Pharmalittle: We’re reading about Novo suing Lilly over ‘deceptive’ ads, a fugitive’s secret life in biotech, and more (opens STAT)

    Published

    STAT's feed description

    Novo Nordisk sued Eli Lilly for allegedly running “deceptive” ads to make its obesity and diabetes drugs appear more effective

  6. BBC News

    Ozempic-maker sues rival, accusing it of false advertising (opens BBC News)

    Published

    BBC News's feed description

    Novo Nordisk, the maker of Wegovy and Ozempic, has launched legal action accusing its arch rival Eli Lilly of false advertising.

  7. Deutsche Welle

    Ozempic maker sues US rival over ad campaign (opens Deutsche Welle)

    Published

    Deutsche Welle's feed description

    Novo Nordisk has claimed that Eli Lilly is using bad data to compare the companies' weight-loss and diabetes products in its ads.

  8. UPI

    Novo Nordisk suing Eli Lilly over GLP-1 ‘outdated’ advertisements (opens UPI)

    Published

    UPI's feed description

    Novo Nordisk, the maker of Wegovy, has filed a lawsuit on Tuesday against competitor Eli Lilly alleging that its GLP-1 advertisements are misleading.

  9. CBS News

    Novo Nordisk sues Eli Lilly, accusing it of false advertising (opens CBS News)

    Published

    CBS News's feed description

    The lawsuit alleges that Eli Lilly misled consumers by using outdated clinical trial data to make its drugs appear more effective than Novo's.

  10. WFMZ Allentown

    Pharma heavyweights clash over anti-obesity drug ads (opens WFMZ Allentown)

    Published

    WFMZ Allentown's feed description

    Danish pharmaceuticals heavyweight Novo Nordisk said Tuesday it is suing arch US rival Eli Lilly over "false and materially misleading" adverts for its competing weight-loss and anti-diabetes treatments.

  11. The Guardian

    Ozempic maker Novo Nordisk sues US rival over ‘materially misleading’ ads (opens The Guardian)

    Published

    The Guardian's feed description

    Danish pharma company says Eli Lilly using outdated trial data to make its weight-loss drugs appear more effective Ozempic maker Novo Nordisk said on Tuesday it is suing arch US rival Eli Lilly over “false and materially misleading” adverts for its competing weight-loss and anti-diabetes treatments.

  12. The Hill

    Novo Nordisk sues rival Eli Lilly over weight loss drug advertising (opens The Hill)

    Published

    The Hill's feed description

    Drugmaker Novo Nordisk sued rival Eli Lilly on Tuesday, accusing the company of false advertising over the performance of its weight loss drugs. The lawsuit, filed in federal district court in New Jersey, alleges Lilly intentionally selected outdated studies to show the use of Mounjaro and Zepbound …

  13. FOX Business

    Novo Nordisk sues Eli Lilly over claims in weight-loss drug ads (opens FOX Business)

    Published

    FOX Business's feed description

    Novo is seeking to force Lilly to pull the disputed ads and run corrective ones as the companies compete for dominance in the booming obesity drug market.

  14. WISH-TV Indianapolis

    Novo Nordisk sues Eli Lilly, alleges deceptive advertising for Zepbound (opens WISH-TV Indianapolis)

    Published

    WISH-TV Indianapolis's feed description

    Novo Nordisk filed a lawsuit against Eli Lilly & Co. accusing the manufacturer of Zepbound of deceptive advertising for allegedly comparing high doses of its drug to low doses of Wegovy.

  15. Semafor

    Novo sues Lilly amid escalating weight-loss rivalry (opens Semafor)

    Published

    Semafor's feed description

    Novo Nordisk argued that Eli Lilly’s ads used outdated comparisons for how much weight users lost using the drugs.

  16. NBC 5 Dallas-Fort Worth

    Novo Nordisk sues rival Eli Lilly over ‘misleading' weight-loss drug advertising (opens NBC 5 Dallas-Fort Worth)

    Published

    NBC 5 Dallas-Fort Worth's feed description

    A Lilly Biotechnology Center in San Diego, California, and Novo Nordisk flags and logo displayed outside the company’s facility in Mainz, Germany.

Novo Nordisk sues rival Eli Lilly over ‘misleading' weight-loss drug advertising | Since Then