A longtime heroin addict named Max winds a band of blue rubber around his bicep.
"So my veins will stick up," he explains before quickly sliding the needle beneath his skin and injecting a powerful drug called hydromorphone.
This isn't happening in a back alley. Instead, Max is inside a brightly lit room where injection drug users are taking part in a clinical trial where they are given their drugs and needles.
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A new study says the drug used by Max, hydromorphone, is a powerful tool that could helps thousands of other Canadians battling opioid addiction.
Max is part of a subset of drug users that don't respond to methadone, the drug most widely used to treat addicts.
Researchers say about ten per cent of addicts don't find relief from methadone, so they often keep using street drugs.
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When he was selected for the drug trial, things were looking grim.
"I was homeless, I was committing crimes to get my fix." He also didn't think he had long to live.
Since being enrolled in the trial, he has put on weight, works out every day and says he can function more or less normally after injecting hydromorphone.
http://www.cbc.ca/news/canada/british-columbia/heroin-hydromorphone-addiction-1.3524118