Has anyone noticed that his sexual 'performance' has improved since the first few uses of Viagra, but subsequently even without it? I'm not absolutely sure yet, but I do believe that there have been at least two occasions when I have contemplated using the blue pill, only to change my mind. But to my pleasant surprise was able to perform even better than I have for a long time. And I hadn't used the pill for about a week!. I have used V only on three occasions, a total dose of 100mg over a period of about three weeks. True, it could be all in the mind, but I wonder whether it has long term effects, staying in the system for long periods. It's almost as if my penis has been 're-trained'!!!