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Home > Drugs > Miscellaneous antivirals > Baloxavir marboxil > Baloxavir marboxil Side Effects
Miscellaneous antivirals

Baloxavir marboxil Side Effects

Applies to baloxavir marboxil: oral tablet.

Serious side effects of Baloxavir marboxil

Along with its needed effects, baloxavir marboxil may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking baloxavir marboxil:

Less common

  • Chest tightness
  • cough producing mucus
  • difficulty breathing
  • fever
  • headache
  • muscle aches
  • sore throat
  • stuffy or runny nose
  • unusual tiredness or weakness

Incidence not known

  • Blistering, peeling, or loosening of the skin
  • bloody, black, or tarry stools
  • chills
  • cough
  • diarrhea
  • difficulty swallowing
  • dizziness
  • fast heartbeat
  • hives, itching, skin rash
  • hoarseness
  • joint or muscle pain
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • red, irritated eyes
  • sores, ulcers, or white spots in the mouth or on the lips
  • voice changes

Other side effects of Baloxavir marboxil

Some side effects of baloxavir marboxil may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common

  • Nausea

Incidence not known

  • Seeing, hearing, or feeling things that are not there
  • vomiting

For Healthcare Professionals

Applies to baloxavir marboxil: oral granule for reconstitution, oral tablet.

Dermatologic

Postmarketing reports: Angioedema (swelling of face, eyelids, tongue, and lips), rash, urticaria, erythema multiforme[Ref]

Gastrointestinal

Common (1% to 10%): Diarrhea, nausea

Postmarketing reports: Vomiting, hematochezia, bloody diarrhea, melena, colitis, ischemic colitis[Ref]

Nausea was reported in 6% of elderly subjects compared to 1% of younger subjects (aged 18 to 64 years).[Ref]

Hypersensitivity

Postmarketing reports: Anaphylactic reactions, anaphylactic shock, anaphylactoid reactions, anaphylaxis, hypersensitivity reactions[Ref]

Nervous system

Common (1% to 10%): Headache[Ref]

Psychiatric

Postmarketing reports: Delirium, abnormal behavior, hallucinations

Respiratory

Common (1% to 10%): Bronchitis, sinusitis, nasopharyngitis

Frequency not reported: Dysphonia[Ref]

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