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FDA Sends Warning Letter to Maker of Ozempic, Wegovy over Unreported Potential GLP-1 Side Effects

The FDA cited Novo Nordisk for serious reporting violations including three deaths and delayed reviews of side effects for semaglutide, a drug used for diabetes and weight loss.

  • On March 5, the U.S. Food and Drug Administration sent a warning letter to Novo Nordisk alleging failures to timely report adverse events for semaglutide products Ozempic and Wegovy.
  • An inspection from Jan. 13 to Feb. 7, 2025 found serious violations at Novo Nordisk's New Jersey site, and Novo Nordisk said on March 10 it has been addressing the FDA's observations since February 2025.
  • The warning letter details specific lapses such as missing a valid patient identifier within 15 days for a male patient death, a Dec. 16, 2024 report medically reviewed only on Feb. 3, 2025, and missing the 10-day medical-review requirement for suicidal ideation.
  • Novo Nordisk must respond within 15 business days to detail how it will prevent future violations after the FDA called corrective measures inadequate and warned regulatory action is possible.
  • The FDA did not say whether the deaths among semaglutide patients, including one suicide, were drug-related, as reports to the BBB's scam tracker spiked in recent weeks.
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FDA sends warning letter to maker of Ozempic, Wegovy over unreported potential GLP-1 side effects

The FDA sent a warning letter this month to Novo Nordisk, alleging the drugmaker failed to report, in a timely manner, potential side effects in patients who took its popular medications containing semiglutide.

·Kansas City, United States
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Healio broke the news in on Wednesday, March 11, 2026.
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