• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
RetailDrugs
Europe

Victory for drugmakers GSK and Boehringer in $640 million Zantac cancer lawsuit, but thousands still to come

By
Jef Feeley
Jef Feeley
,
Ashleigh Furlong
Ashleigh Furlong
, and
Bloomberg
Bloomberg
Down Arrow Button Icon
By
Jef Feeley
Jef Feeley
,
Ashleigh Furlong
Ashleigh Furlong
, and
Bloomberg
Bloomberg
Down Arrow Button Icon
May 24, 2024, 5:15 AM ET
Zantac heartburn medicine are seen at a store in Mountain View, California
Zantac hit the US market as a prescription drug in 1983 before becoming an over-the-counter product in 1996.Yichuan Cao—NurPhoto/Getty Images

Drugmakers GSK Plc and Boehringer Ingelheim GmbH persuaded a Chicago jury to reject a woman’s claim that the blockbuster heartburn drug Zantac caused her cancer, handing the companies a win in the first of thousands of such lawsuits to go to trial.

Recommended Video

Jurors on Thursday found that GSK and Boehringer weren’t liable for Angela Valadez’s injuries and that the companies had properly marketed the drug without a warning about its alleged cancer risk, according to GSK and lawyers involved in the case. Valadez had been seeking at least $640 million in damages.

The verdict in Illinois state court was good news for GSK and Boehringer investors concerned about the financial fallout of thousands of US lawsuits targeting Zantac makers and seeking billions of dollars in damages. 

GSK’s shares were slightly lower in early London trading. They have risen 20% since the start of the year. 

Jefferies had previously said that while it was skeptical of the scientific basis for Zantac’s link to the tumor type seen in this court case, the risk to GSK’s share price of an adverse jury verdict was 10 to 15%. Now this overhang has been removed, said Jefferies analyst Peter Welford. 

Shore Capital’s Sean Conroy described the result as “another positive outcome for GSK,” adding that it was a step toward clearing the litigation-related overhang that has overshadowed the company’s growth outlook.

GSK said the outcome is “consistent with the scientific consensus that there is no consistent or reliable evidence” of increased cancer risks from Zantac.

Mikal Watts, one of Valadez’s lawyers, said Thursday he respected the jury’s decision but will continue to bring more claims to court. “Zantac harmed many Americans and we will prove that over and over in jury trials to come,” Watts said. 

During the trial, Valadez testified that her cancer wreaked havoc with her bowels, forcing her to deal with explosive diarrhea in social settings. In one instance, she had an accident in a limousine on the way to a relative’s wedding and had to return home to change clothes.

“I can’t live a normal life,” according to a transcript of her testimony. “This is why I don’t even want to go anyplace anymore.”

Zantac hit the US market as a prescription drug in 1983 before becoming an over-the-counter product in 1996. It was the world’s top-selling medicine five years later and recognized as one of the first blockbuster drugs to rack up more than $1 billion in annual sales. It’s been owned by a number of companies over the years.

Paris-based Sanofi — Zantac’s current owner — agreed to pay more than $100 million to settle about 4,000 lawsuits claiming it failed to warn users that Zantac could cause cancer, Bloomberg News reported last month. The French drugmaker still faces claims in other state courts.

USDA Recall

GSK has settled some cases before they went to trial, but it opted to let jurors hear Valadez’s claims over her colorectal cancer. She argued Zantac’s former active ingredient, ranitidine, formed the likely carcinogen NDMA over time or when stored in elevated temperatures. The US Food and Drug Administration recalled Zantac in 2019 over the NDMA discovery. 

Lawyers for GSK and Boehringer argued during the nearly monthlong trial that no scientific studies have linked ranitidine to colorectal cancer and that Valadez likely developed the illness — which affects millions of Americans every year — because of other risk factors.

After the FDA recall, Sanofi won approval to return Zantac to US store shelves, but without ranitidine. It’s now made with famotidine, the active ingredient in competitor Pepcid, which is marketed jointly by Merck & Co. and Johnson & Johnson spinoff Kenvue Inc.

Zantac makers got a boost in 2022 when a federal judge threw out more than 5,000 suits filed in federal court in Florida, saying the science behind the cancer claims was flawed. That decision also applied to about 50,000 unfiled cases covered by the so-called multi-district litigation (MDL), according to court filings. Many of those cases later were refiled in state court in Delaware.

Judge Vivian Medinilla in Wilmington is weighing the validity of the scientific evidence underlying the more than 70,000 Zantac cases filed in her court. She is expected to rule soon on whether juries can hear those suits.

The Chicago case was Valadez v Walgreens, 2020-L-000483, Cook County Circuit Court (Chicago).

Join us at the Fortune Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Authors
By Jef Feeley
See full bioRight Arrow Button Icon
By Ashleigh Furlong
See full bioRight Arrow Button Icon
By Bloomberg
See full bioRight Arrow Button Icon

Latest in Retail

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Most Popular

placeholder alt text
AI
Thousands of CEOs just admitted AI had no impact on employment or productivity—and it has economists resurrecting a paradox from 40 years ago
By Sasha RogelbergFebruary 17, 2026
2 days ago
placeholder alt text
Personal Finance
You need $2 million to retire and 'almost no one is close,' BlackRock CEO warns, a problem that Gen X will make 'harder and nastier'
By Sydney LakeFebruary 17, 2026
2 days ago
placeholder alt text
Economy
Top Trump advisor furious about true cost of tariffs being revealed, vows to punish New York Fed for ‘worst paper’ ever in history
By Jake AngeloFebruary 18, 2026
10 hours ago
placeholder alt text
Economy
Trump crackdown drives 80% plunge in immigrant employment, reshaping labor market, Goldman says
By Nick LichtenbergFebruary 17, 2026
1 day ago
placeholder alt text
Personal Finance
Current price of silver as of Tuesday, February 17, 2026
By Joseph HostetlerFebruary 17, 2026
2 days ago
placeholder alt text
Success
As boomer and Gen X bosses retire, working from home will make a major comeback, new research predicts—and you have work-life balance loving Gen Z to thank
By Orianna Rosa RoyleFebruary 17, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Latest in Retail

les wexner
LawBillionaires
Retail billionaire Les Wexner says he was ‘duped’ by adviser Jeffrey Epstein: ‘I was naive, foolish, and gullible’
By The Associated Press and Julie Carr SmythFebruary 18, 2026
8 hours ago
EnvironmentProcter & Gamble
Procter & Gamble thinks it’s unlocked the future of the $25 billion laundry industry. Meet the Tide evo tile, a waterless detergent pod
By Matty Merritt and Morning BrewFebruary 18, 2026
10 hours ago
LawFood and drink
Buffalo Wild Wings wins legal debate after a customer discovered his boneless wings contained no real wing meat at all
By Jake AngeloFebruary 18, 2026
14 hours ago
wendy's
BankingRestaurants
Wendy’s closes hundreds of restaurants after plunge in same-store sales worse than Wall Street expected
By Dee-Ann Durbin and The Associated PressFebruary 16, 2026
3 days ago
RetailRetail
Victoria’s Secret CEO says new customers are embracing the escape provided by the glamorous brand: ‘We were living in a beige world for awhile’
By Emma HinchliffeFebruary 16, 2026
3 days ago
white lotus
CommentaryLuxury
Elites are the villains we love to hate. It’s American culture’s most paradoxical obsession
By Alexa BeckFebruary 15, 2026
4 days ago