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# Miconazole Vaginal Pessary
## Overview
Miconazole is an imidazole antifungal agent. It is available as a vaginal pessary for the treatment of vulvovaginal candidiasis.
## Primary Indications
Treatment of vulvovaginal candidiasis (yeast infection).
## Adult Dosing
* **100 mg vaginal pessary:** Insert 1 pessary vaginally at bedtime for 7 consecutive nights.
* **200 mg vaginal pessary:** Insert 1 pessary vaginally at bedtime for 3 consecutive nights.
* **100 mg/6.5% vaginal ointment (often provided with applicators for a single dose):** Insert one full applicator (approximately 5 grams) vaginally at bedtime. Treatment may be repeated if necessary. *Note: This is an ointment, not a pessary, but often used similarly for a single dose.*
## Pediatric Dosing
Dosing for pediatric patients (under 18 years) is not well-established for vaginal pessaries. Consultation with a pediatrician or infectious disease specialist is recommended.
## Dose Adjustments
No specific dose adjustments are typically required for renal or hepatic impairment with vaginal administration, as systemic absorption is minimal.
## Contraindications
* Known hypersensitivity to miconazole or any component of the formulation.
## Adverse Effects
* **Common:** Vaginal burning, itching, irritation, cramping.
* **Less Common:** Pelvic pain, rash.
## Key Drug Interactions
* **Warfarin:** Miconazole (especially oral but potential for topical as well) can inhibit CYP2C9 and CYP3A4 enzymes, leading to increased warfarin levels and risk of bleeding. Monitor INR closely if used concurrently.
* **CYP3A4 Substrates:** Concurrent use with other drugs metabolized by CYP3A4 may increase the risk of toxicity from those drugs.
## Monitoring
* Monitor for relief of symptoms (itching, burning, discharge).
* Assess for and manage any local irritation or hypersensitivity reactions.
## Clinical Pearls
* Complete the full course of treatment even if symptoms improve early.
* Avoid intercourse during treatment.
* Consider co-treatment of sexual partners if recurrent infections occur or if candidal balanitis is suspected.
* Pessaries may not be suitable for patients with severe vulvar swelling or anal fissuring.
* Ointment formulations may be preferred for patients experiencing significant external itching.
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*Disclaimer: This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always consult the most current prescribing information and your healthcare provider for any medical questions or before making any decisions related to your health or treatment.*
