Monistat 3-Day Yeast Infection Treatment [200mg of Miconazole Nitrate] is a great option for women who want a less concentrated treatment at moderate dosage levels. This package contains three pre-filled applicators. Monistat is the #1 Doctor and Gynecologist Recommended over-the-counter [OTC] yeast infection brand and starts working right at the site of infection. If you do not feel some relief within 3 days, or complete relief within 7 days, stop using the product and consult your healthcare professional. Monistat treats five out of the five most common types of yeast infections and relieves symptoms four times faster than the leading prescription pill.