vardenafil - oral, Levitra (cont.)
HOW TO USE: This drug is taken by mouth as needed, 1 hour before sexual activity with or without food; or use as directed by your doctor. Do not take more often than once daily as needed.A high fat meal may decrease the amount of drug that is absorbed.Avoid eating grapefruit or drinking grapefruit juice while you are being treated with this medication unless your doctor instructs you otherwise.The dosage is based on your medical condition, response to therapy, and other medications you may be taking (see also Drug Interactions section). Consult your doctor or pharmacist for more details.Read the patient information leaflet provided by your pharmacist and ask questions if any of the information is unclear.
SIDE EFFECTS: Headache, flushing, nasal stuffiness, stomach upset, heartburn, runny nose, dizziness, or nausea may occur. Vision changes such as increased sensitivity to light, blurred vision, or impaired blue/green color discrimination may also occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Rarely, a sudden loss of eyesight in one or both eyes (NAION) may occur. This may or may not be due to vardenafil. If this serious problem occurs, seek immediate medical attention. You have a slightly greater chance of developing this serious eye problem if you have heart disease, diabetes, high cholesterol, certain eye problems ("crowded disk"), high blood pressure, are over 50 years of age, or if you smoke.Tell your doctor immediately if any of these highly unlikely but very serious side effects occur: fast/slow/irregular heartbeat, seizures, short-term memory loss.Sexual activity may put extra strain on your heart, especially if you have heart problems. If you have heart problems and experience any of these serious side effects while having sex, stop and seek immediate medical attention: severe dizziness, fainting, chest pain.For males, in the very unlikely event you have a painful or prolonged erection lasting 4 or more hours, stop using this drug and seek immediate medical attention, or permanent problems could occur.Rarely, vardenafil may cause sudden hearing problems, or ringing in the ears. Stop taking this medication and tell your doctor immediately if these effects occur.A serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
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