acne
"I used this drug for the sole purpose to control my moderate acne. 

Side effects: Noticeably more emotional for the first few weeks. 

After usage of 1 year: My acne has decreased dramatically, but I'm not quite sure if it's because I stopped stressing about my acne, or because I changed my hair products, or because of this drug by itself. My skin started getting clearer around 7 months in to taking this medication. Like I said, I don't know if it was because of this, but I don't want to stop taking it because I'm scared my acne will return back to the way it was. It seems that the longer I've taken it, the clearer my skin has become. :)"