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# Miconazole Vaginal Pessary
## Overview
Miconazole is an imidazole antifungal agent that disrupts fungal cell membrane synthesis.
## Primary Indications
Treatment of vulvovaginal candidiasis (yeast infection).
## Adult Dosing
* **100 mg vaginal suppository:** Insert 1 suppository vaginally once daily at bedtime for 7 days.
* **200 mg vaginal suppository:** Insert 1 suppository vaginally once daily at bedtime for 3 days.
* **100 mg vaginal suppository:** Insert 2 suppositories vaginally once daily at bedtime for 3 days. *(Note: This formulation is less common and may be superseded by the 200 mg or 1-day options)*.
* **1200 mg vaginal suppository:** Insert 1 suppository vaginally as a single dose.
## Pediatric Dosing
Data specific to pediatric use of miconazole vaginal pessaries is limited. Use in pediatric patients is generally not recommended unless specifically indicated and managed by a healthcare provider.
## Dose Adjustments
No dose adjustments are typically required for hepatic or renal impairment.
## Contraindications
Hypersensitivity to miconazole or any component of the formulation.
## Adverse Effects
Common: Vaginal burning, itching, irritation, pelvic cramps, and headache.
## Key Drug Interactions
* **Warfarin:** Miconazole can inhibit CYP2C9, potentially increasing warfarin levels and the risk of bleeding. Monitor INR closely if coadministered.
* **CYP3A4 Substrates:** Miconazole can inhibit CYP3A4. Although systemic absorption from vaginal administration is generally low, caution may be warranted with coadministration of drugs that are sensitive substrates of CYP3A4 (e.g., certain statins, benzodiazepines, calcium channel blockers).
## Monitoring
* Symptom improvement.
* Monitor for signs of local irritation or allergic reaction.
* Monitor INR if coadministered with warfarin.
## Clinical Pearls
* The vaginal suppositories should be inserted as deeply as possible into the vagina, preferably while lying down.
* Treatment should be completed even if symptoms improve earlier.
* Avoidance of sexual intercourse during treatment is recommended.
* Consider alternative treatments if symptoms do not improve after completing therapy or if recurrent infections occur.
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*Disclaimer: This information is intended for clinical use and does not replace professional medical advice. Always consult the current prescribing information and your healthcare provider for definitive guidance.*
