Fungal infections:
Indications for: Fluconazole Injection
Oropharyngeal, esophageal candidiasis. Candidiasis prophylaxis in bone marrow transplant. Cryptococcal meningitis. Candida urinary tract infection (UTI), peritonitis, systemic infections.
Adult Dosage:
All doses are once daily. Oropharyngeal candidiasis: 200mg on Day 1, then 100mg/day for at least 2 weeks. Esophageal candidiasis: 200mg on Day 1, then 100mg/day for at least 3 weeks; treat for at least 2 weeks after symptoms resolve; max 400mg/day. Systemic infections: doses of up to 400mg/day have been used. Prophylaxis in bone marrow transplant: 400mg/day; if anticipated severe granulocytopenia: see full labeling. Cryptococcal meningitis: 400mg on Day 1, then 200mg/day (400mg/day may be used) for 10–12 weeks after negative CSF cultures; to suppress relapse in AIDS: 200mg/day. UTI, peritonitis: 50–200mg/day have been used. Renal impairment (CrCl ≤50mL/min): see full labeling.
Children Dosage:
All doses are once daily. Premature neonates: see full labeling. Oropharyngeal candidiasis: 6mg/kg on Day 1, then 3mg/kg/day for at least 2 weeks. Esophageal candidiasis: 6mg/kg on Day 1, then 3mg/kg/day for at least 3 weeks; treat for at least 2 weeks after symptoms resolve; max 12mg/kg/day. Systemic infections: 6–12mg/kg/day have been used. Cryptococcal meningitis: 12mg/kg on Day 1, then 6mg/kg/day (12mg/kg/day may be used) for 10–12 weeks after negative CSF cultures; to suppress relapse in AIDS: 6mg/kg/day. Max for all: 600mg/day. Renal impairment (CrCl ≤50mL/min): see full labeling.
Fluconazole Injection Contraindications:
Concomitant terfenadine at multiple doses of fluconazole ≥400mg. Concomitant drugs known to prolong the QT interval and metabolized by CYP3A4 (eg, erythromycin, pimozide, quinidine).
Fluconazole Injection Warnings/Precautions:
Risk of serious hepatotoxicity; monitor liver function during therapy and for signs/symptoms of hepatic injury; discontinue if occurs. Proarrhythmic conditions. Monitor closely for skin rashes; discontinue if lesions progress. Allergy to other azoles. Renal or hepatic impairment. Susp: hereditary fructose, glucose/galactose malabsorption, sucrose-isomaltase deficiency: not recommended. Elderly. Use effective contraception during and for 1 week after last dose. Pregnancy: avoid; may cause rare congenital anomalies in infants exposed in-utero to high doses (400–800mg/day) during 1st trimester. Nursing mothers.
See Also:
Fluconazole Injection Classification:
Azole antifungal.
Fluconazole Injection Interactions:
See Contraindications. Avoid concomitant voriconazole; if needed, monitor closely esp. when given within 24hrs after fluconazole. Caution with amiodarone (esp. with high-dose fluconazole), other drugs metabolized by CYP2C9 and CYP3A4 with a narrow therapeutic window. Potentiates abrocitinib, lemborexant; avoid. Potentiates ivacaftor, warfarin, sulfonylureas, oral midazolam, theophylline, tofacitinib, tolvaptan, triazolam, alfentanil, amitriptyline, nortriptyline, saquinavir, sirolimus, carbamazepine, NSAIDs, zidovudine; monitor and adjust dose as necessary. May increase levels of phenytoin, halofantrine, ibrutinib, methadone, rifabutin, tacrolimus, vinca alkaloids, cyclosporine, fentanyl, CCBs, losartan, lurasidone; monitor. Concomitant celecoxib: reduce celecoxib dose by half. Increased risk of myopathy/rhabdomyolysis with concomitant HMG-CoA reductase inhibitors; may need dose reduction of these statins. Avoid concomitant olaparib; reduce its dose if unavoidable. May be potentiated by diuretics. May be antagonized by oral cimetidine, rifampin. Concomitant prednisone: monitor for adrenal cortex insufficiency when fluconazole stopped. CNS effects with Vitamin A. Oral contraceptives: see full labeling. Avoid other hepatotoxic drugs.
Adverse Reactions:
Nausea, headache, rash, vomiting, abdominal pain, diarrhea, dizziness; hepatotoxicity, adrenal insufficiency; rare: anaphylaxis, exfoliative dermatitis, QT prolongation, Torsade de pointes.
Drug Elimination:
Renal (~91%). Half-life: ~30 hours (range: 20–50 hours).
Generic Drug Availability:
YES
How Supplied:
Tabs—30; Susp (35mL)—1; IV—contact supplier
