Vilitra, which contains vardenafil, is a medication commonly used to treat erectile dysfunction. One of its potential side effects is back pain, which can occur due to the way the drug works. Vardenafil, like other PDE5 inhibitors, increases blood flow by relaxing the blood vessels, especially in the genital area. This effect can also influence other areas of the body, leading to muscular or skeletal discomfort, including back pain. Additionally, vardenafil may cause muscle tension or spasms as a result of its action on blood circulation, contributing to pain in the lower back or other muscle groups. The exact cause of back pain can vary among individuals, and if it persists, it’s important to consult a healthcare provider.