Vidalista is a medicine commonly used to treat sexual disorders like erectile dysfunction. The active ingredient in vidalista tablet is tadalafil to date and in tadalafil relaxes the muscles of blood vessels and increases blood flow to certain areas of the body. PDE 5 in Vidalista tablet belongs to a class of drugs called inhibitors. vidalista tablet helps men get and keep erections during physical arousal.If you are taking medicine, take it as directed by your doctor and if you are not sure, you should check with your doctor or pharmacist.