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Flucytosine

Flucytosine Side Effects

Christina Aungst, PharmDThienLy Neal, PharmD
Reviewed by Christina Aungst, PharmD, ThienLy Neal, PharmD
Last reviewed on May 31, 2021

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

  • Nausea
  • Vomiting
  • Stomach pain
  • Diarrhea
  • Confusion
  • Headache

Less Common Side Effects

  • Chest pain
  • Trouble breathing
  • Rash
  • Hearing loss
  • Sleepiness
  • Dizziness
  • Fatigue
  • Sensitivity to sunlight
  • Anemia
  • Loss of appetite
  • Dry mouth
  • Low blood sugar
  • Low potassium levels
  • Weakness

Flucytosine serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • Kidney failure
  • Liver failure
  • Bone marrow damage
  • Heart attack
  • Allergic reactions
  • Gastrointestinal (GI) bleeding

Source: DailyMed

The following Flucytosine side effects have also been reported

Along with its needed effects, a medicine 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:

More common

Skin rash, redness, or itching

sore throat and fever

unusual bleeding or bruising

unusual tiredness or weakness

yellow eyes or skin

Less common

Confusion

hallucinations (seeing, hearing, or feeling things that are not there)

increased sensitivity of skin to sunlight

Some side effects 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:

More common

Abdominal pain

diarrhea

loss of appetite

nausea or vomiting

Less common

Dizziness or lightheadedness

drowsiness

headache

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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Why trust our experts?

Christina Aungst, PharmD, is a pharmacy editor for GoodRx. She began writing for GoodRx Health in 2019, transitioning from freelance writer to editor in 2021.
ThienLy Neal, PharmD, has over 10 years experience in the pharmacy field, including in such settings as retail, hospital, compounding, and managed care. She has led various clinical programs while focusing on medication adherence programs, specialty drug initiatives, and polypharmacy safety initiatives.

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