Tamiflu Found to Be Ineffective, May Increase Mortality in Patients Critically Ill With Influenza

A randomized clinical trial posted as a preprint on July 27, 2026, found that treatment with oseltamivir, commonly known by the brand name Tamiflu, is not only ineffective, but highly likely to increase 90-day mortality in critically ill patients with influenza. Researchers enrolled 442 critically ill patients aged 12 and older with laboratory-confirmed influenza between […]
