The inability to attain and sustain an erection for a physical intercourse is one of the major factors for the increase in break up and divorce among couples. Important causes of erectile dysfunction include diabetes, heart complications, multiple sclerosis, Parkinson disease, metabolic syndrome, low testosterone levels and clogged blood vessels. A trusted and FDA affirmed remedy for a firm and hard erection in men is Levitra 20 mg tablets. This FDA approved medicine contains the vital ingredient Vardenafil which boosts the circulation of blood to the male genitalia for a healthy and long lasting erection. This PDE 5 inhibitor drug works remains active in the men’s body for close to 10 hours. Prior approval with your health care provider is mandatory for a safe treatment. Grapefruit juice and liquor should be avoided during its use. Levitra 20 mg online should preferably be ordered from a trusted drug store in UK.