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# Miconazole Vaginal Pessary ## Overview Miconazole vaginal pessaries are antifungal agents used to treat vulvovaginal candidiasis (yeast infections). ## Primary Indications Treatment of uncomplicated vulvovaginal candidiasis. ## Adult Dosing * **100 mg pessary:** Insert one pessary vaginally at bedtime for 7 consecutive nights. * **200 mg pessary:** Insert one pessary vaginally at bedtime for 3 consecutive nights. * **400 mg pessary:** Insert one pessary vaginally at bedtime for 1 consecutive night. A single-dose regimen (e.g., 400 mg) is generally preferred for convenience. ## Pediatric Dosing Safety and efficacy in pediatric patients have not been established. Consult specific pediatric guidelines if use is considered. ## Dose Adjustments No dose adjustments are typically required based on renal or hepatic impairment. ## Contraindications Hypersensitivity to miconazole or any component of the formulation. ## Adverse Effects Common adverse effects include vaginal burning, itching, irritation, and vulvar edema. ## Key Drug Interactions Miconazole is a potent inhibitor of CYP3A4 and CYP2C9. Oral miconazole is known to interact significantly with warfarin and other CYP3A4 substrates (e.g., simvastatin, atorvastatin, certain immunosuppressants). While systemic absorption of miconazole vaginal pessaries is low, caution is advised, especially with prolonged or widespread use, or in patients with compromised mucosal integrity. Concurrent use with oral miconazole or other potent CYP inhibitors should be avoided. ## Monitoring * Monitor for signs and symptoms of vaginal candidiasis. * Assess for and manage any adverse effects. ## Clinical Pearls * Complete the full course of treatment even if symptoms improve earlier. * Avoid intercourse during treatment to prevent reinfection and potential transmission. * Some formulations may weaken latex condoms and diaphragms; consider alternative birth control methods during treatment. * If symptoms persist after treatment, re-evaluate diagnosis and consider alternative therapies. *** **Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and institutional protocols before making clinical decisions.