If you ever need emergency medical treatment for a heart problem, the health care providers who treat you will need to know when you last took vardenafil. Since vardenafil is used as needed, you are not likely to be on a dosing schedule. Vardenafil is in a class of medications called phosphodiesterase PDE inhibitors. The medicine can help achieve an erection when sexual stimulation occurs. Brand names Why is this medication prescribed?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 erectile dysfunction (impotence; inability to get or keep an erection) in men. Vardenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. It works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. Vardenafil 4 tablets Blister 20 mg. Vardenafil, sold under the brand name Levitra among others, is a medication that is used for treating erectile dysfunction. It is a PDE5 inhibitor. It is taken by mouth.