Thank you very much, Mr. Chair.
We talk a lot about misuse because that's what we're talking about in this committee, the misuse of prescription drugs, not just of opioids. A lot of prescription drugs have a tendency to be addictive.
The big question I wanted to ask is this, and I want to direct this specifically of Mark Barnes. There's the stigma you talked about earlier on, and we talk about people who take a prescription drug for pain. They injure their backs and they're taking it and then, of course, we talk about the people who are now on the street and are addicted to heroine or to everything. They're all the same drug.
I would like you as a pharmacist to explain the difference between Dilaudid and street heroine and any one of the drugs that we use when we are given them as a prescription for pain. Is there a difference in terms of opiates? Can you just explain this? I think I know the difference, but it might be interesting if I could hear it from you.