I took it for about a year because it was free through my medical plan. Ate it like candy. I handed it out to my friends and I thought everything was great.
Well, after about a six months of this clowning around I started to see blue and my eyesight started to go. I mean, real fast. I couldn't read with low light, newspaper 2 inches from my eyes etc. Now I'm almost ready for thick coke bottle bottom glasses now.
It sucked cuz I didn't relate the viagra to losing my eyesight. It clicked for me when I was watching/squinting at the TV and I saw one of those lawyer ads asking if you had bad eyesight after using viagra. I stopped immediately.
In hindsight, it wasn't worth walking around with a big boner and losing my good vision.
As an ego thing, I didn't need it but unfolding my huge monster at the urinal made me feel superior to others. It would make me gain 15-20% in girth!