By Pat Anson, PNN Editor

Prescribing opioids and other medications to people with substance use disorders significantly reduces their risk of dying, according to a large new study in British Columbia. The findings add weight to efforts to create a “safe supply” of legal medications for patients at risk of an overdose from increasingly toxic street drugs.

Vancouver, British Columbia was the first major North American city to be hit by a wave of overdoses involving illicit fentanyl, a potent synthetic opioid. That led Vancouver to become a laboratory for harm reduction programs and safe supply sites offering prescription opioids and injectable heroin to drug users.  

How effective have those programs been?

A study by the B.C. Centre for Disease Control, recently published in the British Medical Journal, found that prescribing opioids, stimulants and anti-anxiety medication to nearly 6,000 drug users dramatically reduced their risk of death.

The Risk Mitigation Guide (RMG) program was initially launched in early 2020 to help drug users going through withdrawal while isolated by the COVID-19 quarantine. A year later, the program was extended, allowing doctors and nurse practitioners to prescribe hydromorphone, morphine, oxycodone, fentanyl, benzodiazepines and stimulants to drug users.

People who were given an initial dose of prescription opioids had a 61% lower risk of death from any cause the following week, and were 55% less likely to die of a drug overdose.

The protective effect of a safe supply increased as more doses were provided. Drug users who received four or more days of opioids were 91% less likely to die from any cause and 89% less likely to die from an overdose.

"We saw a profound impact on reduction in somebody's overdose death risk the week after they picked up these drugs, to a degree that is really surprising and has enormous potential," co-author Paxton Bach, MD, an addiction medicine specialist, told CBC News. "This paper is the strongest evidence we have so far, by a large margin, supporting the idea that this can be an effective strategy for reducing overdose death risk."

But critics of safe supply programs say they don’t really reduce drug abuse. An investigation last year by the National Post found that hydromorphone pills given to drug users in Vancouver were being sold to other addicts, with the sellers then using the money to buy more potent street drugs that were often laced with fentanyl.

A new study in JAMA Internal Medicine also found that opioid-related hospitalizations rose sharply in British Columbia after safe supply programs were launched there, although there was no significant change in overdose deaths. The spike in hospitalizations may have been due to more potent street drugs and counterfeit pills on the black market.

Since a public health emergency was declared in British Columbia in 2016, over 13,000 people have died from drug overdoses. A 2020 analysis found that only about 2% of the B.C. opioid-related deaths were caused by prescription opioids alone. The other overdoses mainly involved illicit fentanyl and other street drugs.