Er, first, a heroine is a female hero. Heroin is an opiate drug. Second, it depends on how much he shot up. Most first-time heroin users don't shoot up enough to pass out, and even if they do you remain conscious of what you're doing, it's just like a very relaxed day dream feeling. Your vision could be distorted, but that's not exactly rare with drugs. It could be heroin, or it could be something else. However, I'd guess that it's probably heroin because heroin isn't exactly hard to get a hold of.