Adult men between the ages of 18 and 65 are unable to make their penis firm during sexual activity and maintain that firmness for an extended period of time, and among all the best medications on the market to address this issue, the name of the one that is typically prescribed by a doctor is vilitra 40. This medication contains the active element vardenafil, which strengthens men's flimsy erections during sexual activity so that all men can satisfy both themselves and their partners. Every man should be advised that while taking this medicine, other ED medications should be avoided.