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# Miconazole Vaginal Pessary (Suppository)
## Overview
Miconazole is an imidazole antifungal agent that inhibits the synthesis of ergosterol, a vital component of fungal cell membranes. It is primarily used for the treatment of vulvovaginal candidiasis.
## Primary Indications
* Vulvovaginal candidiasis (yeast infection).
## Adult Dosing
* **100 mg pessary:** 1 pessary intravaginally at bedtime for 7 consecutive days.
* **200 mg pessary:** 1 pessary intravaginally at bedtime for 3 consecutive days.
* **1200 mg pessary:** 1 pessary (single dose) intravaginally at bedtime as a one-time treatment.
## Pediatric Dosing
* **Adolescents (≥12 years):** Same as adult dosing.
* **Children (<12 years):** Use is generally not recommended without specific evaluation for non-candidal causes of vaginitis. Safety and efficacy have not been well established.
## Dose Adjustments
* **Renal/Hepatic Impairment:** No dose adjustments required for vaginal application due to minimal systemic absorption.
## Contraindications
* Hypersensitivity to miconazole or any component of the formulation.
* Avoid vaginal tampons, douches, or other intravaginal products during treatment.
## Adverse Effects
* **Local:** Vaginal burning, itching, irritation, or pelvic cramping.
* **Dermatologic:** Rash or hives (rare).
* **Systemic:** Very rare due to low systemic bioavailability.
## Key Drug Interactions
* **Warfarin:** Topical miconazole can cause a significant increase in international normalized ratio (INR) and potential bleeding risks due to systemic absorption or laboratory interference; monitor INR if used concurrently.
* **Contraceptives:** May weaken latex-based products (condoms, diaphragms); use alternative methods during treatment.
## Monitoring
* Monitor for symptom resolution. If symptoms persist beyond 7 days or recur within 2 months, evaluate for alternative diagnoses (e.g., bacterial vaginosis, trichomoniasis).
## Clinical Pearls
* **Counseling:** Advise patients to insert the pessary as high into the vagina as possible, preferably at bedtime to minimize leakage.
* **Completion:** Patients should finish the full course of therapy even if symptoms improve or menstruation occurs.
* **Partners:** Treatment of sexual partners is not routinely recommended unless they are symptomatic.
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**Educational Disclaimer:** This information is for educational purposes only. Always verify dosing, contraindications, and drug interactions against current institutional protocols, local clinical guidelines, and official manufacturer prescribing information (package insert) before prescribing or administering medication.
