Vidalista 40 mg is used to temporarily treat erectile dysfunction in men. Erectile dysfunction in men is a serious problem when it comes to sexual activities. The main ingredient in the drug is Tadalafil which helps in increasing blood flow to the penis. More blood flow to the penis results in an erection. Once this drug is consumed, it increases cyclic guanosine monophosphate (cGMP), which helps blood vessels to relax. This improves the blood flow to the penis and results in an erection. Using this medicine improves your sex life.