text: If you are young, you have "plumbing " that works as good as it gets. However as you age valves don't work as well, cholesterol build-up takes it's toll and the "pipe" doesn't fill as well.  Viagra minimizes the effects of the deterioration and provides old farts like me with a fuller "pipe". Of course, for the most part, a new GF will do the same trick if the damage isn't too bad!\n\nAnd no....it does not increase the libido or sex drive....it aids in the functioning of a man's equipment!