PRECAUTIONS: Before taking voriconazole, tell your doctor or pharmacist if you are allergic to it; or to other azole-type antifungal drugs (e.g., itraconazole, ketoconazole); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Tell your doctor your medical history, especially of: liver disease, heart problems (e.g., irregular heartbeats), recent chemotherapy, mineral/electrolyte imbalance (e.g., low blood levels of calcium).Voriconazole 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 need medical attention right away.The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using voriconazole, tell your doctor or pharmacist of all the drugs you take and 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 voriconazole safely.This medication, especially when taken for long periods of time, may affect your vision. Your vision should be monitored closely while taking this medication. Report any loss of vision, problems recognizing colors correctly, or any other vision problems immediately to your doctor.This drug may make you dizzy or cause vision changes. Do not drive (especially at night), use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Limit alcoholic beverages.This medication may make you more sensitive to the sun. Avoid prolonged sun exposure, use a sunscreen and wear protective clothing when outdoors.Before having surgery, tell your doctor or dentist that you are using this medication.This product contains sucrose and is therefore not recommended if you have a rare hereditary metabolic condition (e.g., fructose intolerance, sucrase-isomaltase deficiency, glucose-galactose malabsorption).Older adults may be more sensitive to the side effects of this drug, especially QT prolongation (see above).This medication is not recommended for use during pregnancy as it may cause harm to an unborn baby. Women should use a reliable form of birth control while taking this medication. Consult your doctor for more details.It is not known whether this drug passes into breast milk. Breast-feeding is not recommended while using this drug. Consult your doctor before breast-feeding.
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