Just so I was being clear, loss of creativity or anything else doesn't happen to everyone. And I wasn't uncreative; I still came up with ideas for writing and drawing. I'm just saying my interest in some things wasn't as strong as before.

As SeptemberMorn said, anxiety and depression can affect creativity, so the drugs may help you be more creative if they help those problems. As I said, you can try them, and you always have the option of turning back, if you find it doesn't work for you.