U.S. flag An official website of the United States government
  1. Home
  2. Drug Databases
  3. Drug Safety-related Labeling Changes

Drug Safety-related Labeling Changes (SrLC)

Get Email Alerts | Guide

XOFLUZA (NDA-214410)

(BALOXAVIR MARBOXIL)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

Download Data

Expand all

05/30/2025 (SUPPL-8)

Approved Drug Label (PDF)

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

…

Important Dosing Information

…

Advise patients to follow the healthcare provider’s dosing recommendation for a single, one-time dose of XOFLUZA. XOFLUZA is dosed based on weight and is available as tablets, and for oral suspension (packets and bottles). XOFLUZA for oral suspension in a packet is not made into a suspension but rather mixed with a small amount of room temperature drinking water to aid administration.

Tablets: Provided as a blister card containing either one tablet of 40 mg, or one tablet of 80 mg as a single dose [see Dosage and Administration (2.2)].

For Oral Suspension:

  • Provided in a packet containing either 30 mg or 40 mg baloxavir marboxil. Advise patients or caregivers to read and follow the Instructions for Use for details on the preparation and administration (oral or via enteral feeding tube). XOFLUZA for oral suspension (packets) should be taken immediately after mixing and fully dispersing with water because the product does not contain a preservative [see Dosage and Administration (2.2, 2.3), and How Supplied/Storage and Handling (16)].

    …

    PATIENT INFORMATION

    Additions and/or revisions underlined:

    …

    How should I take or give XOFLUZA?

  • Take or give XOFLUZA exactly as directed by your healthcare provider or pharmacist.

  • Your healthcare provider will prescribe XOFLUZA as a single, one-time dose.

  • Your healthcare provider will prescribe XOFLUZA tablets, or XOFLUZA oral suspension packets or XOFLUZA oral suspension bottles (provided with an oral syringe).

  • Your healthcare provider will prescribe XOFLUZA based on your or your child’s weight.

  • XOFLUZA may be given through a feeding tube that is 4 French or larger. Follow your healthcare provider’s instructions for giving XOFLUZA through a feeding tube. Take XOFLUZA with or without food.

  • Do not take XOFLUZA with dairy products, calcium-fortified beverages, laxatives, antacids or oral supplements containing calcium, iron, magnesium, selenium, or zinc.

  • If you take too much XOFLUZA, go to the nearest emergency room right away.

    If your healthcare provider prescribes you XOFLUZA for oral suspension (packets):

  • See the detailed Instructions for Use for information about how to prepare and take or give a dose of XOFLUZA for oral suspension (packets).

  • Your or your child’s total prescribed dose of XOFLUZA for oral suspension (packets) may require preparing one or two packets of XOFLUZA.

  • Disperse the oral granules from the XOFLUZA for oral suspension packets into a small container with 1 tablespoon (about 15 to 20 mL) of room temperature drinking water, and take or give the medicine right away.

  • Contact your healthcare provider or pharmacist if you have any questions on how to take or give the prescribed dose of XOFLUZA for oral suspension (packets).

    If your healthcare provider prescribes you XOFLUZA for oral suspension (bottles):

  • The pharmacist will prepare XOFLUZA for oral suspension in a bottle and provide you with an oral syringe. If XOFLUZA is not given to you as a liquid medicine or an oral syringe was not provided, contact your pharmacist.

    …

    How should I store XOFLUZA for oral suspension (packets):

  • Store XOFLUZA for oral suspension at 68°F to 77°F (20°C to 25°C).

  • Keep XOFLUZA for oral suspension in the original package.

  • XOFLUZA for oral suspension in packets has no preservative.

    XOFLUZA for oral suspension (bottles):

  • Store XOFLUZA for oral suspension at 68°F to 77°F (20°C to 25°C). Keep XOFLUZA for oral suspension in the original bottle.

  • XOFLUZA for oral suspension in a bottle has no preservative.

  • Use XOFLUZA for oral suspension by the expiration time and date written on the bottle label. Throw away any XOFLUZA for oral suspension not used by the time and date on the bottle label, or if it has been stored at a temperature above 77°F (25°C).

  • XOFLUZA for oral suspension comes in a bottle with a child-resistant cap.

    …

               

12/19/2024 (SUPPL-7)

Approved Drug Label (PDF)

8 Use in Specific Populations

8.4 Pediatric Use

Additions and/or revisions underlined:

…

Pediatric Subjects (< 5 Years of Age)

The safety and effectiveness of XOFLUZA for treatment and post-exposure prophylaxis of influenza in pediatric subjects less than 5 years of age, including neonates, have not been established [see Warnings and Precautions (5.2) and Microbiology (12.4)].

03/01/2024 (SUPPL-6)

Approved Drug Label (PDF)

6 Adverse Reactions

6.1 Clinical Trials Experience

Additions and/or revisions underlined:

…

In an active-controlled, double-blind trial Trial CP40563 in pediatric subjects, a total of 79 subjects 5 to less than 12 years of age, received the recommended weight-based dosage of XOFLUZA, and 39 subjects received oseltamivir. Of the 118 subjects 5 to less than 12 years of age in Trial CP40563, 15 subjects in the XOFLUZA arm and 4 subjects in the oseltamivir arm were at high risk of developing influenza complications. The most frequently reported AEs (greater than or equal to 5%) in all subjects in the XOFLUZA treatment arm were vomiting (5%) and diarrhea (5%). Vomiting was reported in 18% of subjects in the oseltamivir arm [see Clinical Studies (14.1)]. There are limited safety data in patients 5 to <12 years at high risk of developing influenza complications.

…

09/27/2021 (SUPPL-1)

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

Tablets: Provided as a blister card containing either one tablet of 40 mg, or one tablet of 80 mg as a single dose [see Dosage and Administration (2.2)].