DXM isn't harmful, but Coricidin is.

..And D.J. Screw didn't die from DXM. He died from taking codeine with promethazine. If you knew anything about the man, you'd have known that. He basically built the codeine/promethazine culture in Houston with his music.

Very few people have died from taking DXM. Very, very few, and very few seriously harmful side-effects have ever been recording from dxm itself. It's the other active ingredients which people are misinformed enough to take that lead to death and problems.