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# Miconazole Vaginal Pessary
## Overview
Miconazole is an imidazole antifungal agent. Vaginal pessaries deliver the medication directly to the site of infection.
## Primary Indications
Vulvovaginal candidiasis (yeast infection).
## 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.
* **100 mg/g cream (used with applicator):** 1 applicatorful (approximately 5g) inserted vaginally at bedtime for 7 consecutive nights.
## Pediatric Dosing
Dosing in pediatric patients is not well-established. Use with caution and consult specialized pediatric guidelines if necessary.
## Dose Adjustments
No specific dose adjustments are typically required for renal or hepatic impairment for vaginal administration.
## Contraindications
Hypersensitivity to miconazole or any component of the formulation.
## Adverse Effects
Common: Vaginal burning, itching, irritation, lower abdominal cramping.
Less Common: Rash, hives.
## Key Drug Interactions
* **CYP3A4 Inhibitors:** Miconazole vaginal products can inhibit CYP3A4. Systemic absorption is limited but theoretically possible, leading to increased concentrations of certain CYP3A4 substrates (e.g., certain opioids, statins). Avoid concomitant use if possible, or monitor closely for toxicity.
* **Warfarin:** Miconazole can inhibit CYP2C9, potentially increasing warfarin levels. Monitor INR closely if used concurrently.
## Monitoring
* Monitor for signs and symptoms of vulvovaginal candidiasis, particularly if symptoms do not improve or worsen after completing therapy.
* Monitor for signs of hypersensitivity or significant local irritation.
* Monitor INR if co-administered with warfarin.
## Clinical Pearls
* Complete the full course of therapy even if symptoms improve earlier.
* Avoid intercourse during treatment. A partner may require treatment if penile candidiasis is present.
* Consider alternative therapies if symptoms do not resolve after treatment, as treatment failure can occur with resistant strains or misdiagnosis.
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**Disclaimer:** This information is intended for healthcare professionals. It is essential to consult the most current prescribing information and relevant clinical guidelines before making any therapeutic decisions. Drug information can change rapidly, and this summary may not reflect the latest updates.
