The component of Vidalista 40 is a member of the phosphodiesterase type 5 inhibitors pharmacological class. A man with erectile dysfunction cannot get a strong erection because there is not enough blood flow to the penile area. Vidalista 40 is required when a man's erection becomes less frequent during crucial times. Thus, the main purpose of Vidalista 40 is to guarantee that the penis remains erect for a considerable period of time prior to sexual activity. When a guy is stimulated in any way, there is a large blood influx into the penis, which is what makes the penis erect.