Do not use in larger or smaller amounts or for longer than recommended. Use Levitra Vardenafil exactly as directed on the label, or as prescribed by your doctor. B No evidence of risk in humans Based on FDA pregnancy categories Vardenafil is not approved for use in women, and the effects of this medicine during pregnancy or in breastfeeding women are unknown. Be sure that you receive only the type of vardenafil that was prescribed by your doctor. Talk to your doctor about eating grapefruit or drinking grapefruit juice while taking this medicine.Vardenafil is the generic name of the drugs Levitra and Staxyn. It’s used to treat erectile dysfunction. If you’re currently dealing with ED, you can speak with a doctor to see if vardenafil. 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. Vardenafil, sold under the brand name Levitra among others, is a medication that is used for treating erectile dysfunction. [1] [2] It is a PDE5 inhibitor. [1] It is taken by mouth. [1] Medical use.