Diflucan Oral

In Depth

Fluconazole may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that require immediate medical attention. The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may affect the heart rhythm (see also Drug Interactions section). Before using fluconazole, tell your doctor or pharmacist if you have any of the following conditions:

certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG)
family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death)

Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using fluconazole safely.

Although uncommon, this drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

Because kidney function can decrease with age, use caution in the elderly as they may be more sensitive to the effects of this medication

This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.

Fluconazole passes into breast milk. Consult your doctor before breast-feeding.

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