Benadryl (or it's generic) does NOT contain DXM, all it contains is diphenhydramine (sp?) Which is sort of a nasty kind of trip if you take enough, can stay awake,and don't die. Even if you can do all three, nothing in the trip is worth the effort. I tripped on the shit by accident once (didn't even know it would get you high) triying to sleep through a weekend in county. It sucked, stick to robo or whatever, dextromathorphan is what you want, and nothing else.