I was recently asked by a friend of mine about the side effects of Modafinil. I wanted to answer him more professionally, so I used the site Modafinil.org. And what can I tell you in the end? It has a fairly wide range of uses; you can get side effects in addition to what you need. Remember that it reduces your appetite. This can lead to weight loss. I didn't know this, because I've never come across such a thing. My weight is always normal. Maybe exercise and proper nutrition help, I don't know for sure.