Generic Name: Vardenafil (var-DEN-a-fil) Brand Name: Levitra Levitra is used for: Treating erectile dysfunction (ED). Levitra is a phosphodiesterase inhibitor. It works by helping to increase blood flow into the penis during sexual stimulation. This helps you to achieve and maintain an erection. Levitra may also be used for purposes other than those listed in this medication guide. Please consult your physician before taking any medication.