Vidalista 20mg is used to treat erectile dysfunction and to improve the ability to exercise. tadalafil contains PDE inhibitors. This drug treats pH by placing blood vessels in the lungs to make blood flow more easily and this drug does not prevent the spread of sexually transmitted diseases, such as pregnancy or the human immune virus. vidalista 20 should take this medicine 30 minutes before sexual intercourse and if you take this medicine, you should take this medicine regularly.