VFEND
Generic Name: voriconazole (vor i KON a zole)
What is VFEND?
VFEND (voriconazole) is an azole antifungal medication. It works by blocking fungal cell wall growth, resulting in the death of the fungus.
VFEND is used to treat infections caused by yeast or other types of fungus. It may also be used to treat patients with serious fungal infections who cannot tolerate other types of treatment.
VFEND may also be used for other purposes not listed here.
Important information about VFEND
Do not use VFEND without your doctor’s consent if you are pregnant. It could cause harm to the unborn baby. Use an effective form of birth control, and tell your doctor if you become pregnant during treatment.
There are many other medicines that can cause serious or life-threatening drug interactions with VFEND. Tell your doctor about all the prescription and over-the-counter medications you use.
Before taking VFEND, tell your doctor if you have heart rhythm problems, an electrolyte imbalance, liver or kidney disease, or a history of allergy to other antifungal medications such as fluconazole (Diflucan), ketoconazole (Nizoral), or itraconazole (Sporanox).
Use this medicine for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated.
VFEND can cause problems with your vision. If you use this medicine for more than 28 days, you may need to have your eyes checked.
Before taking VFEND
Do not take VFEND if you are allergic to voriconazole, or if you are taking any of the following drugs:
quinidine (Cardioquin, Quinora, Quinidex, Quinaglute, Quin-Release, Quin-G);
sirolimus (Rapamune);
carbamazepine (Tegretol);
pimozide (Orap);
phenobarbital;
ritonavir (Norvir);
efavirenz (Sustiva);
rifabutin (Mycobutin) or rifampin (Rifadin, Rimactane, Rifater);
an ergot medicine such as ergotamine (Ergomar, Cafergot, Ercaf, Wigraine, others) or dihydroergotamine (D.H.E., Migranal); or
(these drugs are no longer available in the U.S.) terfenadine (Seldane) or astemizole (Hismanal).
The drugs listed above can cause dangerous serious or life-threatening drug interactions with VFEND. Tell your doctor about all other medicines you are using.
If you have any of these conditions, you may need a dose adjustment or special tests to safely use VFEND:
heart rhythm problems;
a metabolic disorder such as high or low levels of calcium, potassium, or magnesium;
a history of allergy to other antifungal medications such as fluconazole (Diflucan), ketoconazole (Nizoral), or itraconazole (Sporanox).
VFEND tablets contain lactose. Before taking a VFEND tablet, tell your doctor if you have a hereditary form of galactose intolerance, Lapp lactase deficiency, or glucose-galactose malabsorption.
FDA pregnancy category D. This medication can cause harm to an unborn baby. Do not use VFEND without your doctor’s consent if you are pregnant. Tell your doctor if you become pregnant during treatment. Use an effective form of birth control while you are using this medication. It is not known if voriconazole passes into breast milk or if it could harm a nursing baby. Do not use VFEND without telling your doctor if you are breast-feeding a baby.
How should I take VFEND?
Take VFEND exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.
Take VFEND at least one hour before or after eating a meal. Shake the oral suspension (liquid) well just before you measure a dose. To be sure you get the correct dose, measure the liquid with a marked measuring spoon or medicine cup, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one. Do not mix the oral suspension with any other medicine or liquid. Take VFEND for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated.
To be sure VFEND is helping your condition, your blood will need to be tested on a regular basis. Your kidney or liver function may also need to be tested. Visit your doctor regularly.
VFEND can cause problems with your vision. If you use this medicine for more than 28 days, you may need to have your eyes checked.
Store the tablets at room temperature away from moisture and heat. Store the oral liquid at room temperature for up to 14 days. Throw away any unused liquid after 14 days.
What happens if I miss a dose?
Use the medication as soon as you remember. If it is almost time for the next dose, skip the missed dose and use the medicine at the next regularly scheduled time. Do not use extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention if you think you have used too much of this medicine.
Overdose symptoms may include vision problems, excessive mouth watering, enlarged pupils, weakness, loss of balance, shortness of breath, or seizure (convulsions).
What should I avoid while taking VFEND?
VFEND may cause changes in vision including blurred vision and sensitivity to light. Wear sunglasses during the day to protect your eyes from bright light. Be careful if you drive or do anything that requires you to have clear vision. Avoid exposure to sunlight or artificial UV rays (sunlamps or tanning beds). VFEND can make your skin more sensitive to sunlight and sunburn may result. Use a sunscreen (minimum SPF 15) and wear protective clothing if you must be out in the sun.
VFEND side effects
Get emergency medical help if you have any of these signs of an allergic reaction to VFEND: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects:
sudden behavior changes, problems with thinking or speech;
stomach pain, loss of appetite, dark urine, jaundice (yellowing of the skin or eyes);
urinating less than usual or not at all;
fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or
uneven heart rate, chest pain, general ill feeling.
Less serious VFEND side effects may include:
vision problems such as blurred vision, eyes being more sensitive to light;
fever;
mild nausea, vomiting, or diarrhea;
headache; or
swelling in your hands, ankles, or feet.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What other drugs will affect VFEND?
Many drugs can interact with VFEND. Below is just a partial list. Tell your doctor if you are using:
phenytoin (Dilantin);
cyclosporine (Sandimmune, Neoral);
tacrolimus (Prograf);
warfarin (Coumadin);
stomach acid reducers such as esomeprazole (Nexium), omeprazole (Prilosec), lansoprazole (Prevacid), or pantoprazole (Protonix);
tranquilizers or sedatives such as alprazolam (Xanax), diazepam (Valium), midazolam (Versed), triazolam (Halcion), and others;
cholesterol-lowering medicines such as atorvastatin (Lipitor), lovastatin (Mevacor), pravastatin (Pravachol), or simvastatin (Zocor);
vinblastine (Velban), vincristine (Oncovin), or vinorelbine (Navelbine);
a calcium channel blocker such as verapamil (Isoptin, Verelan, Calan, Covera), amlodipine (Norvasc), felodipine (Plendil), isradipine (DynaCirc), nicardipine (Cardene), nifedipine (Adalat, Procardia), nimodipine (Nimotop), or nisoldipine (Sular); or
an oral diabetes medicine such as glipizide (Glucotrol), glyburide (DiaBeta, Micronase), tolbutamide (Orinase), tolazamide (Tolinase), or chlorpropamide (Diabinese).
This list is not complete and there may be other drugs that can interact with VFEND. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
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