Flucytosine: Side Effects, Uses & Monitoring
Flucytosine Capsules, USP are indicated only in the treatment of serious infections caused by susceptible strains of Candida and/or Cryptococcus .
- Data source
- FDA labeling via NIH DailyMed (label 3f2f67a8…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Flucytosine Capsules, USP are indicated only in the treatment of serious infections caused by susceptible strains of Candida and/or Cryptococcus . Candida: Septicemia, endocarditis and urinary system infections have been effectively treated with flucytosine. Limited trials in pulmonary infections justify the use of flucytosine. Cryptococcus: Meningitis and pulmonary infections have been treated effectively. Studies in septicemias and urinary tract infections are limited, but good responses have been reported. Flucytosine Capsules, USP should be used in combination with amphotericin B for the treatment of systemic candidiasis and cryptococcosis because of the emergence of resistance to Flucytosine Capsules, USP (see MICROBIOLOGY ).
Conditions associated with Flucytosine in labeling
Cryptococcosis
Cryptococcosis is a medical condition that may be associated with various symptoms and signs....
Endocarditis
Infection of the inner lining of the heart chambers and valves, which can cause fever, fatigue, and heart murm...
Meningitis
Inflammation of the membranes around the brain and spinal cord, usually caused by infection. Can be life-threa...
Sepsis
A life-threatening condition in which the body's response to infection damages its own tissues and organs....
Frequently Asked Questions
What is Flucytosine used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Flucytosine?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Flucytosine require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Flucytosine.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.