Vidalista is a prescription medication used to treat erectile dysfunction in men. It belongs to the pharmacological class of phosphodiesterase type 5 inhibitors. Vidalista aids in erection initiation and maintenance by increasing blood flow to the penis. It can be taken with or without food. It needs to be taken just as your doctor has advised. You should take it 30 to 60 minutes before you want to have sex. For this pill to help you get an erection, you need to be sexually stimulated.