FDA Approves a Second Drug for the Prevention of Influenza A and B in Adults and Children

FDA Approves a Second Drug for the Prevention of Influenza A and B in Adults and Children The Food and Drug Administration (FDA) today approved the use of Relenza (zanamivir for inhalation) for prevention (prophylaxis) of influenza (flu) in adults and children 5 years of age and older. Relenza, an antiviral medication, was previously approved for the treatment of influenza A and B virus infections in adults and children. Tamiflu (oseltamivir phosphate) previously was approved for both prevention and treatment of flu; today's approval of Relenza for prevention provides Americans with another option for the prevention of influenza A and B infections.