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XOFLUZA can help you feel better in just over 2 days.*

XOFLUZA is a one-dose prescription flu medicine taken within the first 48 hours of symptoms.

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ACT FAST! The first 48 hours are critical to fighting the flu with XOFLUZA.

In certain patients who are at risk for complications, the CDC recommends treating the flu with a prescription medication within the first 48 hours of experiencing symptoms.

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Feel better in just over 2 days.*

Over-the-counter medicines just treat flu symptoms, but prescription XOFLUZA attacks the flu virus at its source. So you can feel better, faster. On average, patients felt better in 2.3 days versus 3.3 days with placebo.

 One dose XOFLUZA® (baloxavir marboxil)

XOFLUZA works with just one dose.

XOFLUZA treats the flu in a single dose with one tablet.

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XOFLUZA is a safe flu medicine.

In clinical trials, side effects with XOFLUZA were similar to or lower than placebo. The most common side effects are bronchitis, nausea, diarrhea, sinusitis and headache.

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Ask your doctor about XOFLUZA.

When symptoms first appear, ask your doctor about prescription XOFLUZA. The sooner you do, the sooner you can start feeling like you, not the flu.

*On average, patients felt better in 2.3 days versus 3.3 days with placebo.
Source: Centers for Disease Control and Prevention (CDC). The CDC does not endorse private products, services, or enterprises. The content provided is for informational purposes only. Find the latest at

Save on XOFLUZA.

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Eligible patients may pay as little as $30 for XOFLUZA, up to $60 off. Terms and conditions apply.

Talk to a doctor online now.

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Don't wait to talk to a doctor and ask about prescription XOFLUZA. Use this virtual care service to book an appointment.

What is XOFLUZA?

XOFLUZA is a prescription medicine used to:

  • Treat the flu (influenza) in people 12 years of age and older who have had flu symptoms for no more than 48 hours.
  • Prevent the flu in people 12 years of age and older following contact with a person who has the flu.

It is not known if XOFLUZA is safe and effective in children less than 12 years of age.

Important Safety Information

Who should not take XOFLUZA?
Do not take XOFLUZA if you are allergic to baloxavir marboxil or any of the ingredients in XOFLUZA.

What should I tell my healthcare provider before using XOFLUZA?

  • Tell your healthcare provider about all of your medical conditions, including if you are:
    • Pregnant or plan to become pregnant. It is not known if XOFLUZA can harm your unborn baby.
    • Breastfeeding or plan to breastfeed. It is not known if XOFLUZA passes into your breast milk.
  • Tell your healthcare provider about all of the medicines you take, including prescription and over-the-counter medicines, antacids, laxatives, vitamins, and herbal supplements.

What are the possible side effects of XOFLUZA?
Serious side effects may include

  • Allergic reaction. Get emergency medical help right away if you develop any of the following signs or symptoms of an allergic reaction:
    • trouble breathing
    • skin rash, hives or blisters
    • swelling of your face, throat or mouth
    • dizziness or lightheadedness


The most common side effects of XOFLUZA in clinical studies were diarrhea, bronchitis, nausea, sinusitis, and headache. These are not all the possible side effects of XOFLUZA. Call your healthcare provider for medical advice about side effects.

XOFLUZA is not effective in treating or preventing infections other than influenza. Other kinds of infections can have symptoms like those of the flu or occur along with flu and may need different kinds of treatment. XOFLUZA does not prevent bacterial infections that may happen with the flu. Tell your healthcare provider if you feel worse or develop new symptoms during or after treatment with XOFLUZA or if your flu symptoms do not start to get better.

You are encouraged to report side effects to Genentech by calling 1-888-835-2555 or to the FDA by visiting or calling 1-800-FDA-1088.

Please see full Prescribing Information, including Patient Product Information.