"Seyfried is shown smoking a joint in a motel room."
"Shea is shown taking a bong hit in one scene"
"Swain is shown smoking a joint in motel room"
"In the same scene, Wahlquist smokes a cigarette and pot from a roach pipe"
Other references to this movie:
Amanda Seyfried - Info - "I had to pretend to smoke weed [for Alpha Dog (2006)] and drink beer (actually herbal cigarettes and water).", HBO, Jan. '07
Olivia Wilde - Info - "I loved that the scene [in Alpha Dog (2006)] wasn't about the nudity; it's about belittling his manhood. And I love the fact that I'm like sitting back with my boobs out, smoking a cigarette, and completely insensitive and hard. I found that really powerful, as opposed to having it be a more voyeuristic scene about the nudity. It felt more real and interesting, and raw and fun", Complex magazine, Apr./May '07
, Allposters.com