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# Miconazole vaginal pessary
## Overview
Miconazole is an imidazole antifungal agent that inhibits the synthesis of ergosterol, a vital component of fungal cell membranes. It is available as a vaginal suppository (pessary) for the treatment of vulvovaginal candidiasis.
## Primary Indications
Treatment of uncomplicated vulvovaginal candidiasis (yeast infection).
## Adult Dosing
* **100 mg suppository:** Insert 1 suppository intravaginally once daily at bedtime for 7 consecutive days.
* **200 mg suppository:** Insert 1 suppository intravaginally once daily at bedtime for 3 consecutive days.
* **1200 mg suppository:** Insert 1 suppository intravaginally as a single one-time dose at bedtime.
## Pediatric Dosing
Safety and efficacy have not been established for patients under 12 years of age. For adolescents (≥12 years), use the same dosing regimen as adults. Local protocols may vary; consult a pediatrician for suspected non-candidal infections or recurrent symptoms in this population.
## Dose Adjustments
No systemic renal or hepatic dose adjustments are required due to minimal systemic absorption.
## Contraindications
* Hypersensitivity to miconazole or any component of the formulation.
* Patients with recurrent yeast infections should consult a physician before use to confirm diagnosis.
## Adverse Effects
* **Common:** Local burning, itching, irritation, or pelvic cramping.
* **Rare:** Contact dermatitis or hypersensitivity reactions.
## Key Drug Interactions
* **Warfarin:** Although systemic absorption is low, vaginal miconazole may potentially increase the anticoagulant effect of warfarin. Monitor INR if concurrent use is necessary.
* **Latex/Diaphragms:** Miconazole can damage latex or polyurethane condoms and diaphragms; avoid concurrent use as these products may fail.
## Monitoring
* Monitor for symptom improvement within 3 days.
* Discontinue use and seek medical consultation if symptoms persist beyond 7 days or if local irritation worsens.
## Clinical Pearls
* **Administration:** Ensure the suppository is inserted high into the vagina using the provided applicator or as directed.
* **Timing:** Optimal time for administration is at bedtime to reduce leakage and increase resident time.
* **Education:** Patients should wear loose-fitting cotton underwear and avoid douching or using feminine hygiene sprays during treatment.
* **Referral:** If the patient experiences high fever, foul-smelling discharge, or abdominal/back pain, they should be evaluated for pelvic inflammatory disease (PID) or other complications.
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*Disclaimer: This information is for educational purposes only. Always verify current prescribing information, institutional guidelines, and drug-interaction databases before clinical decision-making.*
