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# Miconazole Vaginal Pessary
## Overview
Miconazole is an imidazole antifungal agent used to treat vaginal yeast infections (vulvovaginal candidiasis). It is available as a vaginal suppository (pessary) in various strengths and dosage forms.
## Primary Indications
Treatment of vulvovaginal candidiasis.
## Adult Dosing
* **100 mg vaginal suppository:** Insert 1 pessary vaginally once daily at bedtime for 7 days.
* **200 mg vaginal suppository:** Insert 1 pessary vaginally once daily at bedtime for 3 days.
* **100 mg vaginal cream (applicator):** Insert 1 applicatorful (approximately 5g, delivering 100 mg) vaginally once daily at bedtime for 7 days.
* **2% vaginal cream (applicator):** Insert 1 applicatorful (approximately 5g, delivering 100 mg) vaginally once daily at bedtime for 7 days.
* **4% vaginal cream (applicator):** Insert 1 applicatorful (approximately 5g, delivering 200 mg) vaginally once daily at bedtime for 3 days.
* **Intravaginal Gel (10%):** Insert 1 applicatorful (5g, 500mg) vaginally as a single dose.
*Note: Specific regimen selection may depend on the severity of infection and local protocols.*
## Pediatric Dosing
* **Children 12 years and older:** Same as adult dosing.
* **Children younger than 12 years:** Safety and efficacy have not been established. Consult with a pediatrician.
## Dose Adjustments
No dose adjustments are typically required for renal or hepatic impairment, as systemic absorption is minimal.
## Contraindications
Hypersensitivity to miconazole or any component of the formulation.
## Adverse Effects
* **Common:** Vulvovaginal burning, itching, irritation. Abdominal pain, headache.
* **Less Common:** Rash, urticaria, swelling.
## Key Drug Interactions
* **Warfarin:** Miconazole (especially oral or higher systemic doses) can inhibit CYP2C9, increasing warfarin levels and the risk of bleeding. Although vaginal absorption is minimal, caution is advised, particularly with prolonged or extensive use, or in patients with compromised vaginal mucosa. Monitor INR closely if concurrent use is necessary.
## Monitoring
* Monitor for signs and symptoms of vaginal candidiasis.
* Assess for local irritation or allergic reactions.
* If concurrent warfarin use, monitor INR.
## Clinical Pearls
* Treatment duration can vary. Shorter regimens (3-day) are often effective for mild to moderate infections, while longer regimens (7-day) may be preferred for more severe or recurrent cases.
* The pessary should be inserted at bedtime to minimize leakage and maximize contact time.
* Avoidance of sexual intercourse during treatment is often recommended.
* Latex condoms and diaphragms may be damaged by miconazole, reducing their effectiveness. Advise patients to use alternative birth control methods during and for 72 hours after treatment.
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*Disclaimer: This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always consult the most current prescribing information and local guidelines before making any treatment decisions.*