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Release date: 2026-05-08 13:40:51 Recommended: 19
Baloxavir marboxil (Xofluza) is a prescription medicine used to treat and prevent influenza. Its brand name Xofluza corresponds to the active ingredient baloxavir marboxil. Baloxavir marboxil (Xofluza) is an antiviral drug that specifically targets the influenza virus. Unlike the common cold, influenza typically has a sudden onset with severe symptoms, including high fever, muscle aches, and fatigue. Baloxavir marboxil (Xofluza) works by inhibiting viral replication and spread in the body, helping patients recover faster, and can also be used for post-exposure prophylaxis to reduce the risk of infection.
The active substance in Baloxavir marboxil (Xofluza), baloxavir marboxil, belongs to a class of antiviral drugs called "cap-dependent endonuclease inhibitors." When the influenza virus multiplies in human cells, it needs to "snatch" the cap structure of host cell mRNA to initiate its own gene transcription. Baloxavir marboxil (Xofluza) specifically inhibits the virus's own cap-dependent endonuclease, thereby blocking viral mRNA synthesis and preventing the virus from replicating and spreading. Compared to some traditional anti-influenza drugs (such as neuraminidase inhibitors), Baloxavir marboxil (Xofluza) acts at an earlier stage of the viral life cycle, usually requiring only a single oral dose to significantly shorten the duration of viral shedding and symptom duration.
Baloxavir marboxil (Xofluza) is mainly used in the following two situations: First, to treat acute influenza in patients aged 3 weeks and older who have had flu symptoms for no more than 48 hours. Early administration is most effective; the sooner it is taken, the more effectively it inhibits viral spread, reduces symptoms, and shortens the course of illness. Second, for prophylaxis in individuals aged 3 weeks and older who have had close contact with a confirmed or suspected influenza patient. If you have had close contact (e.g., sharing a room, directly caring for a patient) with someone who has the flu within 48 hours, taking Baloxavir marboxil (Xofluza) can significantly reduce the risk of infection. Whether for treatment or prevention, Baloxavir marboxil (Xofluza) is given as a single oral dose, which is convenient and fast.
