The most common side effect with Levitra (seen in more than 1 patient in 10) is headache. Flushing (reddening of the skin) is also seen in more than 1 patient in 10 taking the film-coated tablets. For the full list of all side effects reported with Levitra, see the package leaflet.
Levitra should not be used in people who may be hypersensitive (allergic) to vardenafil or any of the other ingredients. It must not be used when sexual activity is inadvisable, such as in men with severe heart disease. It must also not be used in patients who have ever had loss of vision because of a problem with blood flow to the nerve in the eye (non-arteritic anterior ischemic optic neuropathy or NAION). Levitra must not be taken with nitrates (medicines used to treat angina). Because Levitra has not been studied in patients with severe liver or kidney disease, patients who have hypotension (low blood pressure) or patients who have had a stroke or a heart attack within the last six months must not use it. Levitra must not be taken with ketoconazole and itraconazole (used to treat fungal infections) in men over 75 years of age, or with ritonavir or indinavir (used to treat HIV infection).
Caution is needed when Levitra is taken with some other medicines. See the package leaflet for full details.