Dobromir Michalek
Dobromir Michalek voted up Anonymous' answer

Viagra is a medication for erectile dysfunction. It works by relaxing your blood vessels and increasing the blood flow to your penis.     
According to a recent study, two out of three men who experienced erectile problems reported that taking a PDE-5 inhibitor such as Viagra improved their erection.     
In most cases, … Read more

Dobromir Michalek
Dobromir Michalek voted up Steven Vakula's answer
Talk to your friend's Father-in-Law. There is the opposite side of taking something that is not required you could develop a dependency on the Viagra. Since you would then think, subconsciously that since there is no ordinary 3 hour erection that something is wrong and then need to take the drug to develop and maintain your … Read more