Ask your doctor if you are not sure if any of your medications contain nitrates. Take vardenafil exactly as directed. Drinking alcohol can increase certain side effects of vardenafil. Avoid medication errors by using only the form and strength your doctor prescribes. Stop using vardenafil and call your doctor at once if you have: ringing in your ears, or sudden hearing loss; irregular heartbeat; swelling in your hands, ankles, or feet; shortness of breath; a light-headed feeling, like you might pass out; or seizure convulsions. Follow all directions on your prescription label and read all medication guides or instruction sheets. Take the tablet without liquid. · Drugs and Supplements Vardenafil (Oral Route) Description and Brand Names Before Using Proper Use Precautions Side Effects Products and services Proper Use Drug information provided by: Merative, Micromedex ® Use this medicine exactly as directed by your doctor. Do not use more of it and do not use it . VARDENAFIL (var DEN a fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which helps to maintain an erection. This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions. COMMON BRAND NAME(S): Levitra. Vardenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, vardenafil works by increasing blood flow to the penis.