Yes, he was a classic alcoholic. He didn't drink heavily but every time he did, it got him into trouble.

He was not a drug addict though. Some guy named Griswold started that rumor because he and Poe didn't like each other much.

Just type "Poe pro-slavery" or something along those lines in your browser, you'll get quite a surprise. I just want to know what these people base this on.