Mycosyst (Fluconazole)

• Fluconazole is used to treat fungal infections affecting various body systems.
• Candidiasis (oropharyngeal, esophageal, vaginal): eradicates yeast infection on mucosal surfaces, alleviates pain, reduces discharge, and promotes healing of lesions.
• Cryptococcal meningitis: penetrates the central nervous system, reduces fungal load in cerebrospinal fluid, and improves neurological outcomes when combined with appropriate therapy.
• Systemic candidiasis: clears invasive Candida infections in the bloodstream and internal organs, preventing dissemination and supporting recovery in immunocompromised patients.
• Vulvovaginal candidiasis: treats recurrent yeast infections, restoring normal vaginal flora.

• Fluconazole inhibits the fungal cytochrome P450 enzyme 14α‑demethylase, a key step in ergosterol synthesis. By blocking this enzyme, the drug disrupts the formation of fungal cell membranes, leading to increased membrane permeability and inhibition of fungal growth. The selective inhibition of the fungal enzyme over human P450 enzymes provides antifungal activity with limited host toxicity. The resulting depletion of ergosterol compromises membrane integrity and impairs essential cellular processes, contributing to the fungistatic effect.

Fluconazole may cause a range of adverse reactions, varying from mild, self‑limiting symptoms to serious, potentially life‑threatening events.

Common Side Effects

• Nausea: mild stomach upset.
• Headache: transient cranial discomfort.
• Abdominal pain: cramping or discomfort in the abdomen.
• Rash: mild skin redness or itching.
• Diarrhea: loose stools.
• Elevated liver enzymes: transient increase in hepatic enzymes.

Serious or Rare Side Effects

• Hepatotoxicity: elevated liver enzymes or liver injury.
• Severe skin reactions (e.g., Stevens‑Johnson syndrome): blistering and detachment of skin.
• Anaphylaxis: sudden severe allergic reaction with breathing difficulty.

Before initiating fluconazole therapy, consider the following precautions to ensure safe use.

• Monitor liver function: obtain baseline and periodic liver enzyme tests.
• Adjust dose in renal impairment: reduce dosage in patients with severe kidney dysfunction.
• Avoid in known hypersensitivity: discontinue if allergic reaction occurs.
• Caution in pregnancy: use only if potential benefit outweighs risk, as safety data are limited.
• Store at ambient temperature: keep below 25°C, protect from moisture and keep in original packaging.

Fluconazole can interact with several medicines; awareness of major and moderate interactions helps prevent reduced efficacy or increased toxicity.

Major Interactions (Avoid)

• Rifampin: strong enzyme inducer that markedly lowers fluconazole levels.
• Phenytoin: induces metabolism, decreasing antifungal effectiveness.
• Carbamazepine: increases clearance of fluconazole, risking treatment failure.

Moderate Interactions (Monitor Closely)

• Warfarin: fluconazole may increase INR, requiring dose adjustment.
• Oral contraceptives: efficacy may be reduced, consider additional contraceptive measures.