Fluconazole

What it is and how it works

Mechanism class: Cytochrome P450 2C19 Inhibitors · Cytochrome P450 3A4 Inhibitors · Cytochrome P450 2C9 Inhibitors

Indications

INDICATIONS AND USAGE Fluconazole tablets are indicated for the treatment of: Vaginal candidiasis (vaginal yeast infections due to Candida ). Oropharyngeal and esophageal candidiasis. In open noncomparative studies of relatively small numbers of patients, fluconazole tablets were also effective for the treatment of Candida urinary tract infections, peritonitis, and systemic Candida infections including candidemia, disseminated candidiasis, and pneumonia. Cryptococcal meningitis . Before prescribing fluconazole tablets for AIDS patients with cryptococcal meningitis , please see CLINICAL STUDIES section. Studies comparing fluconazole tablets to amphotericin B in non-HIV infected patients have not been conducted. Prophylaxis: Fluconazole tablets are also indicated to decrease the incidence of candidiasis in patients undergoing bone marrow transplantation who receive cytotoxic chemotherapy and/or radiation therapy. Specimens for fungal culture and other relevant laboratory studies (serology, histopathology) should be obtained prior to therapy to isolate and identify causative organisms.

Dosage and administration (summary)

DOSAGE AND ADMINISTRATION Dosage and Administration in Adults: Single Dose Vaginal candidiasis: The recommended dosage of fluconazole for vaginal candidiasis is 150 mg as a single oral dose. Multiple Dose SINCE ORAL ABSORPTION IS RAPID AND ALMOST COMPLETE, THE DAILY DOSE OF FLUCONAZOLE IS THE SAME FOR ORAL AND INTRAVENOUS ADMINISTRATION. In general, a loading dose of twice the daily dose is recommended on the first day of therapy to result in plasma concentrations close to steady-state by the second day of therapy. The daily dose of fluconazole for the treatment of infections other than vaginal candidiasis should be based on the infecting organism and the patient’s response to therapy.

Contraindications

CONTRAINDICATIONS Fluconazole tablets are contraindicated in patients who have shown hypersensitivity to fluconazole or to any of its excipients. There is no information regarding cross-hypersensitivity between fluconazole and other azole antifungal agents. Caution should be used in prescribing fluconazole tablets to patients with hypersensitivity to other azoles.

Warnings and precautions

WARNINGS Hepatic injury: Fluconazole should be administered with caution to patients with liver dysfunction. Fluconazole has been associated with rare cases of serious hepatic toxicity, including fatalities primarily in patients with serious underlying medical conditions. In cases of fluconazole-associated hepatotoxicity, no obvious relationship to total daily dose, duration of therapy, sex, or age of the patient has been observed. Fluconazole hepatotoxicity has usually, but not always, been reversible on discontinuation of therapy.

Pregnancy

Pregnancy Teratogenic Effects Potential for Fetal Harm: Use in pregnancy should be avoided except in patients with severe or potentially life-threatening fungal infections in whom fluconazole may be used if the anticipated benefit outweighs the possible risk to the fetus.

Storage and supply

HOW SUPPLIED Fluconazole Tablets USP, 150 mg are pink mottled, biconvex, capsule shaped uncoated tablets with “C” debossed on one side and “10” debossed on other side. Unit dose package of 1 NDC68071-3474-1 Storage Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F) .

Source: Fluconazole (Fluconazole) — US FDA prescribing information, 2025-11-17, DailyMed. Summarised and shortened; the full label governs. Iranian registration, indications and labelling may differ.