If you think you or someone else may have overdosed on: Levitra Vardenafil , call your doctor or the Poison Control center. What, if anything, seems to improve your symptoms? If you are a Mayo Clinic patient, this could include protected health information. However, all medications come with risks. It may be difficult to remain firm despite wanting to have sex.Vardenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, vardenafil w. How do ED medications work? Viagra, Cialis, Levitra, and Stendra are all in a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. These drugs . In combination with sexual stimulation, vardenafil works by increasing blood flow to the penis to help a man get and keep an test1.ru drug does not protect against .