New Scientist recently published and article called 'This pill will make you smarter.' It talks about a new category of drugs called 'lifestyle drugs.' This is medication that is used to enhance your physical or mental performance.
Personally the idea of these types of drugs scares me, because of the long term social and biological effects that they can have on the body. I personally believe that as a society we need to learn that all things that come in pill form are not always good for us. How many miracle drugs have been pulled from the market, because they're too harmful.