Vidalista 5mg is one medication used to treat erectile dysfunction in men. One of its ingredients is tadalafil, a drug classified as a phosphodiesterase type 5 inhibitor. Tadalafil facilitates a strong erection by increasing blood flow to the penis during sexual stimulation. Avoid ingesting grapefruits or grapefruit juice while taking this medication. Depending on grapefruit and grapefruit juice, the body may absorb different amounts of this drug. It aids many men in achieving and maintaining an erection. Give it up if you have ever had any allergic reactions from using it. See your doctor straight away.