A very intense movie with a lot of disturbing scenes. I'm not sure exactly what message the writer was shooting for with the drugs, but it came off a little more as a warning about the situations than drugs themselves because the situations were very specific in time, place, and the people involved.

I love it though.

And the "climax" is harrowing and masterful in a way that really strikes at the physiological responses of the body/brain to stimulating imagery...particularly if you're a guy. Activate the heightened state of awareness and arousal that comes from sexual/pornographic imagery and then blast you with something gross and/or disturbing when your mental filter/guard against it is let down.

Or another way to look at it is that the movie pulled off one of the few ways of ruining your Jennifer Connely fantasy.