It is usually recommended to take Vidalista 20 mg orally with a glass of water, either with or without food. However, consuming excessive amounts of alcohol or grapefruit juice should be avoided as they may increase the likelihood of experiencing side effects. Common side effects may include headache, indigestion, back pain, muscle aches, flushing, and nasal congestion. https://www.onemedz.com/product/vidalista-20-mg/