6. Pfizer Inc. has agreed to settle more than 10,000 cases accusing it of hiding the cancer risks of its Zantac heartburn drug, according to people familiar with the deal, the biggest of the litigation. The agreements cover cases in state courts across the US but don't completely resolve the company's exposure to Zantac claims, according to the people, who spoke on the condition of anonymity because they weren't authorized to discuss the settlement publicly. Financial details of the accords weren't immediately available. The US Food and Drug Administration confirmed the findings in 2020 and ordered drugmakers to take all versions of the medicine off the market.