Vilitra is a medication used to treat erectile dysfunction (ED) in men. It contains Vardenafil as its active ingredient, which belongs to a class of drugs known as PDE5 inhibitors. Vardenafil works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. Vilitra can have side effects, such as headache, flushing, stuffy or runny nose, upset stomach, and back pain. Serious side effects are rare but can include prolonged erections (priapism), sudden vision loss, and hearing problems.