Vidalista 2.5 mg is a low-dose medication containing tadalafil, which is used to treat erectile dysfunction (ED) in adult men. Depending on the prescription and local approval, low-dose tadalafil may be used as a daily treatment to help improve erectile function. Tadalafil belongs to a group of medicines called PDE5 inhibitors. It helps relax blood vessels and increase blood flow to the penis during sexual stimulation, making it easier to achieve and maintain an erection.