GSK and Sanofi shares leap on Zantac ruling

7 December 2022

A US court has dismissed allegations that the heartburn drug Zantac (ranitidine) causes cancer.

The ruling in the Zantac federal Multi-District Litigation (MDL) has been welcomed by companies that have marketed the drug at various times, including GSK (LSE: GSK), Sanofi (Euronext: SAN) and Pfizer (NYSE: PFE), and means they will not have to fight more than 1,700 lawsuits in federal court, although they do still face tens of thousands of similar cases at the state level.

" ... there is no consistent or reliable evidence that ranitidine increases the risk of any cancer"

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