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## Miconazole Vaginal / Pessary
### Overview
Miconazole is an imidazole antifungal agent. Vaginal formulations are used to treat vulvovaginal candidiasis (yeast infections).
### Primary Indications
* Treatment of vulvovaginal candidiasis (VVC).
### Adult Dosing
* **Intravaginal Suppository/Tablet:**
* 100 mg suppository inserted vaginally once daily at bedtime for 7 days.
* 200 mg suppository inserted vaginally once daily at bedtime for 3 days.
* 100 mg suppository inserted vaginally twice daily for 3 days.
* **Intravaginal Cream (2%):**
* One full applicator (approximately 5 grams) inserted vaginally at bedtime for 7 days.
* **Intravaginal Cream (4%):**
* One full applicator (approximately 5 grams) inserted vaginally at bedtime for 3 days.
### Pediatric Dosing
* **VVC Treatment:**
* **Children 12 years and older:** Use adult dosing.
* **Children younger than 12 years:** Safety and efficacy have not been established. Consult local protocols or a pediatrician.
### Dose Adjustments
* No specific dose adjustments are necessary for renal or hepatic impairment for topical vaginal administration.
### Contraindications
* Hypersensitivity to miconazole or any component of the formulation.
### Adverse Effects
* **Common:** Vaginal burning, itching, irritation, pelvic pain, dyspareunia.
* **Less Common:** Headache, rash, urticaria.
### Key Drug Interactions
* **Warfarin:** Miconazole (especially oral or higher systemic absorption) can inhibit CYP2C9, increasing warfarin levels and INR. While systemic absorption of vaginal miconazole is minimal, caution is advised. Monitor INR closely if concurrent use is necessary.
* **CYP3A4 Substrates:** Vaginal miconazole has minimal systemic absorption, so significant interactions with CYP3A4 substrates are unlikely.
### Monitoring
* Monitor for signs and symptoms of VVC resolution.
* Monitor for adverse effects.
### Clinical Pearls
* Complete the entire course of treatment, even if symptoms improve sooner.
* Avoid sexual intercourse during treatment to prevent potential transmission and reinfection.
* If symptoms do not improve after completing the course, or if they worsen, re-evaluate for alternative diagnoses or resistant organisms.
* Pregnancy: While generally considered low risk, it is prudent to use vaginal miconazole only when clearly needed and under the guidance of a healthcare provider during pregnancy, particularly in the first trimester.
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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 treatment decisions. Dosing and recommendations may vary based on patient-specific factors and local protocols.*
