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## Miconazole Vaginal and Pessary ### Overview Miconazole is an imidazole antifungal agent. ### Primary Indications Vulvovaginal candidiasis (yeast infection). ### Adult Dosing * **Vaginal Cream 2% or 4%:** Insert one applicatorful (typically 100 mg or 200 mg) vaginally at bedtime for 3 or 7 nights, depending on the product strength and duration. * **Vaginal Suppositories 100 mg:** Insert one suppository vaginally at bedtime for 7 nights. * **Vaginal Suppositories 200 mg:** Insert one suppository vaginally at bedtime for 3 nights. * **Vaginal Suppositories 1200 mg (extended-release):** Insert one suppository vaginally as a single dose. * **Pessaries:** Some formulations may be available as pessaries for vaginal insertion. Specific dosing will depend on the product's concentration and prescribed regimen. Consult the specific product's labeling or local protocol. ### Pediatric Dosing * **Children (under 12 years):** Safety and efficacy have not been established for vaginal miconazole in this age group. Consult a pediatrician. * **Adolescents (12 years and older):** Dosing is generally the same as adults. ### Dose Adjustments No dose adjustments are typically required for renal or hepatic impairment. ### Contraindications Hypersensitivity to miconazole or any component of the formulation. ### Adverse Effects Common: Vaginal burning, itching, irritation, pelvic cramps. Less Common: Headache, rash. ### Key Drug Interactions * **CYP3A4 Inhibitors:** Miconazole is a moderate inhibitor of CYP3A4. Concurrent use with CYP3A4 substrates (e.g., certain statins, benzodiazepines, calcium channel blockers, cyclosporine, tacrolimus, sirolimus, warfarin) can increase plasma concentrations of these drugs, potentially leading to toxicity. Advise caution and consider alternative antifungals if significant interaction is a concern. ### Monitoring * Monitor for resolution of symptoms. * Assess for and manage any adverse effects. ### Clinical Pearls * Advise patients to complete the full course of therapy, even if symptoms improve earlier. * Avoid intercourse during treatment as it may reduce efficacy and lead to irritation. * Some formulations may weaken latex condoms and diaphragms; alternative contraceptive methods should be used. * The pessary form of miconazole is not a medical device for prolapse or support; it is a drug delivery system for antifungal treatment. *** *Disclaimer: This information is intended for healthcare professionals. It is essential to consult the most current prescribing information and relevant clinical guidelines for definitive patient care decisions.*