What is Xofluza: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 31, 2020

Xofluza overview

BRAND NAMES:

  • Xofluza

Generic Names:

  • Xofluza (80 Mg Dose)

Uses:

  • Treats influenza (flu).

Therapeutic Classes:

  • Antiviral

Forms:

  • Tablet

How it’s taken:

  • By mouth

What is Xofluza used for?

What form(s) does Xofluza come in

  • Tablet

What are common Xofluza doses?

  • Tablet Therapy Pack 2 x 40MG

Common Xofluza prescriptions

  • Xofluza
    1 x 40mg tablet therapy pack

  • Xofluza
    1 x 80mg tablet therapy pack

  • Xofluza
    2 x 20mg tablet therapy pack

  • Xofluza
    2 x 40mg tablet therapy pack

How to take Xofluza

  • Your doctor will tell you how much medicine to use. Do not use more than directed. Do not take this medicine for any illness other than the flu.

  • Start using this medicine within 48 hours, as soon as the symptoms of flu (including cough, fever, runny nose, headache, joint or muscle pain) appear.

  • Take this medicine with or without food. However, do not take this medicine with dairy products or drinks rich in calcium.

  • Take all of the medicine in your prescription to clear up your infection, even if you feel better after the first few doses.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Your doctor will tell you how much medicine to use. Do not use more than directed. Do not take this medicine for any illness other than the flu.

  • Start using this medicine within 48 hours, as soon as the symptoms of flu (including cough, fever, runny nose, headache, joint or muscle pain) appear.

  • Take this medicine with or without food. However, do not take this medicine with dairy products or drinks rich in calcium.

  • Take all of the medicine in your prescription to clear up your infection, even if you feel better after the first few doses.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

What to do if you miss a dose of Xofluza

Xofluza contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to baloxavir marboxil.

Xofluza warnings

  • Tell your doctor if you are pregnant or breastfeeding, or if you have any type of infection.

  • This medicine is not a substitute for a yearly flu shot. It also will not treat or prevent a bacterial infection.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Xofluza interactions

  • Do not use this medicine together with antacids, laxatives, or oral supplements containing calcium, iron, magnesium, selenium, or zinc.

  • Do not use this medicine if you have received the nasal flu vaccine (live attenuated influenza vaccine), unless your doctor says it is okay.

Xofluza side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Blistering, peeling, or loose skin

  • Chest tightness, trouble breathing

  • Cough, fever, headache, pain or tenderness around your eyes and cheekbones

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