Vardenafil (Levitra) is a medication used to treat impotence and erectile failure in men. It was introduced in the year 2003. A tablet of 10 mg. or 20 mg. is taken 30 to 60 minutes before sex is desired.
Do not take Vardenafil if you are suffering from:
- significant heart disease
- severe kidney or liver disease
- low blood pressure
- recent stroke or heart attack
- inherited retinal diseases of the eye.
Use with caution in liver and kidney disease, deformed penis, sickle cell anaemia, history of priapism (prolonged erections of penis), multiple myeloma, leukaemia, bleeding disorders and active peptic ulcer. Use lower doses in the elderly.
Side effects may include nausea, heartburn and dizziness. Unusual effects include flushing, watery nose, headache, light sensitive eyes, blurred vision, muscle spasms, fainting and low blood pressure.
There is a severe interaction with nitrates used for angina. Other interactions may occur with erythromycin, amyl nitrate, ritonavir, ketoconazole, indinavir, itraconazole, alpha-blockers and grapefruit juice.