Vilitra 10 mg is a prescription medicine used to treat erectile dysfunction (ED) in adult men. Its active ingredient is vardenafil, a PDE5 inhibitor that helps improve blood flow to the penis during sexual stimulation, making it easier to achieve and maintain an erection. Vardenafil relaxes the blood vessels in the penile region. When a man is sexually aroused, this increased blood flow supports a firm erection. It does not increase sexual desire and only works with sexual stimulation.