Write down key personal information, including any major stresses or recent life changes. Take your partner along, if possible. This can cause anxiety, which might make erectile dysfunction worse. Write down questions to ask your doctor. Therefore, it should not be taken by people taking other medications that affect the QT interval such as amiodarone.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. 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 sexually transmitted. Levitra (vardenafil hydrochloride) is an oral medication taken to treat erectile dysfunction (ED). It’s in the same class of drugs as other popular ED medications, including Viagra and Cialis.