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# Miconazole Vaginal Pessary ## Overview Miconazole is an imidazole antifungal agent. Vaginal pessaries are designed for localized vaginal delivery. ## Primary Indications Treatment of vulvovaginal candidiasis (yeast infection). ## Adult Dosing * **100 mg pessary:** Insert one pessary vaginally at bedtime for 7 consecutive days. * **200 mg pessary:** Insert one pessary vaginally at bedtime for 3 consecutive days. * **Higher strength pessaries (e.g., 1200 mg):** Insert one pessary vaginally as a single dose. Follow the specific instructions provided with the product. ## Pediatric Dosing Safety and efficacy in pediatric patients have not been established for the vaginal pessary formulation. ## Dose Adjustments No dose adjustments are typically needed for renal or hepatic impairment due to minimal systemic absorption. ## Contraindications * Known hypersensitivity to miconazole or any component of the formulation. ## Adverse Effects * **Common:** Vaginal burning, itching, irritation, pelvic cramping. * **Less Common:** Vulvar irritation, headache. ## Key Drug Interactions * **Warfarin:** Miconazole can inhibit CYP2C9, potentially increasing warfarin levels and the risk of bleeding. Monitor INR closely if used concurrently, especially with systemic miconazole. Vaginal formulations have less systemic absorption, but caution is still advised. * **CYP3A4 Substrates:** May potentially interact with other drugs metabolized by CYP3A4, though the risk is significantly lower with topical vaginal administration compared to oral or IV routes. ## Monitoring * Symptom relief (itching, burning, discharge). * Monitor for signs of local irritation or hypersensitivity. ## Clinical Pearls * Complete the full course of treatment, even if symptoms improve earlier. * Avoid sexual intercourse during treatment to prevent reinfection and potential irritation. * Use sanitary pads to protect clothing from leakage. * Can be used during pregnancy, but consult with a healthcare provider for specific recommendations and preferred agents. Often, topical treatments are preferred over oral agents in pregnancy. --- ***Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and local institutional protocols for definitive guidance. The absence of a specific warning does not mean that a drug interaction or adverse effect is not possible.*