<p><strong>Hypersensitivity such as anaphylaxis, angioedema, urticaria, and erythema multiforme</strong>: Initiate appropriate treatment if an allergic-like reaction occurs or is suspected.<br />
<br />
<strong>Risk of bacterial infection</strong>: Serious bacterial infections may begin with influenza-like symptoms or may coexist with, or occur as, a complication of influenza. Baloxavir Marboxil has not been shown to prevent such complications. Prescribers should be alert to potential secondary bacterial infections and treat them as appropriate.</p>