These include quinidine, procainamide, amiodarone and sotalol. Before taking Levitra, tell your doctor about all your medical problems, including if you: Have heart problems such as angina, heart failure, irregular heartbeats, or have had a heart attack. Other medicines or treatments for ED. Like the other ED medications, Cialis has its advantages and disadvantages. Have liver problems. Some form of sexual stimulation is needed for an erection to happen with Levitra. Write down questions to ask your doctor.Vardenafil (Levitra): Uses, Alternatives, Side Effects & More – GoodRx. feeling faint or weak, dizziness, blurry vision, feeling confused. Erection lasting for more . Vardenafil is a medication that treats erectile dysfunction. ED is the inability to achieve and sustain an erection suitable for sexual intercourse. This medication works by increasing .