Never use alone. That presence can save your life.
In Sudbury, April brought the heaviest burden on emergency medical services in six years, as a poisoned drug supply — laced with fentanyl, carfentanil, xylazine, and benzodiazepines — sent overdose calls to levels unseen since the early pandemic. The crisis persists even after public health officials sounded the alarm, a reminder that warnings alone cannot outpace the speed at which contaminated substances move through a community. What unfolds here is not merely a local emergency but a reflection of a broader, unresolved tension between a toxic illicit supply and the limits of the systems built to contain its harm.
- Overdose emergency calls in Sudbury surged to a six-year peak in April, overwhelming EMS and showing no sign of slowing even after a formal drug warning was issued on April 22.
- Street drugs are being cut with a dangerous mixture of synthetic opioids and heavy sedatives — including carfentanil and xylazine — making standard naloxone doses insufficient and leaving users in states of near-unconsciousness that can mask imminent respiratory failure.
- Harm reduction services are under sustained pressure, with naloxone demand remaining critically high and severe adverse reactions continuing to rise in the days following the public health alert.
- Public Health is urging people who use drugs to carry naloxone, avoid mixing substances, start with lower doses, and never use alone — practical measures aimed at keeping people alive while the source of contamination remains unidentified.
- The danger has not passed: Sudbury's emergency infrastructure remains strained, and the contaminated supply continues to circulate, making every use a potentially fatal encounter with an unknown substance.
Sudbury's emergency medical services endured their most demanding month in six years this past April, with overdose calls reaching levels not recorded since May 2020. The surge has continued even after Public Health issued a drug warning on April 22, suggesting the forces driving the crisis remain very much in motion.
What makes this wave particularly dangerous is the composition of the drugs circulating through the region. Street substances are being cut with fentanyl, carfentanil, benzodiazepines, xylazine, and medetomidine — a combination that amplifies sedation and defeats standard treatment. A single dose of naloxone may not be enough to reverse a poisoning, and the heavy sedation can make someone appear merely drowsy when they are, in fact, dangerously close to respiratory failure.
In the five days before their most recent statement, community services reported both sustained high demand for naloxone and a continued rise in severe reactions. Public Health has stopped short of speculating about the source of contamination, focusing instead on what people can do right now: carry naloxone — available free at The Point, Réseau ACCESS Network, pharmacies, and hospitals — avoid mixing substances, use lower doses, and never use alone. The National Overdose Response Service offers virtual monitoring for those who have no one nearby.
If someone is overdosing, the steps are urgent: call 911, administer naloxone immediately, and be prepared to give a second or third dose. Place the person in the recovery position and monitor their breathing until paramedics arrive. The signs of opioid poisoning — bluish skin, slowed or stopped breathing, loss of consciousness — are distinct from benzodiazepine poisoning, which can produce extreme drowsiness and blackouts that persist for hours and may worsen after a period of apparent stability.
What triggered April's particular surge remains unknown. What is clear is that the warning has not ended the crisis, and the drug supply in Sudbury has become measurably more lethal for those navigating it.
Sudbury's emergency medical services faced their busiest month in six years this April, with overdose calls climbing to levels not seen since May 2020. The spike has persisted even after public health officials issued a drug warning on April 22, signaling that whatever is driving the crisis remains active and dangerous.
Street drugs circulating through the region are being cut with a cocktail of substances that amplify risk and complicate treatment. Fentanyl and carfentanil—synthetic opioids thousands of times more potent than morphine—are present, but so are benzodiazepines, xylazine, and medetomidine. This mixing means that a single dose of naloxone, the overdose reversal medication, may not be enough. People are requiring multiple applications, and the sedation is so heavy that some users slip into what harm reduction workers call "nods"—a state of near-unconsciousness that can mask how close someone is to stopping breathing altogether.
Public Health officials have been careful not to speculate about the source of the contamination. What they know is that the indicators remain troubling. In the five days before their latest statement, community services reported both a sustained high demand for naloxone and a continued rise in severe adverse reactions. The warning itself was straightforward: if you use drugs, understand that what you're taking may not be what you think it is, and take precautions accordingly.
The guidance they've issued reflects the reality of harm reduction in a poisoned drug supply. Carry naloxone—free kits are available at The Point, Réseau ACCESS Network, most pharmacies, and hospitals. Don't mix substances, not with alcohol, not with prescription medications, not with anything else. Start low and go slow with dosing. Most critically: never use alone. The presence of another person, or access to a virtual monitoring service like the National Overdose Response Service, can mean the difference between a medical emergency and a fatal one.
If someone is actively overdosing, the steps are clear but urgent. Call 911 first and stay with the person. Administer naloxone immediately—it causes no harm if opioids aren't involved, and in a poisoning situation, the risk of not using it far outweighs any concern about unnecessary administration. Because of the heavy sedation from contaminants like benzodiazepines, the person may not wake up quickly, and a second or third dose may be necessary. Place them in the recovery position to keep their airway open, and monitor their breathing until paramedics arrive.
The signs of opioid poisoning are unmistakable if you know what to look for: skin taking on a bluish or grayish cast, lips and fingernails darkening, confusion and inability to stay conscious, and most critically, breathing that becomes slow, weak, or stops altogether. Choking or gurgling sounds are a sign the airway is compromised. Benzodiazepine poisoning presents differently—extreme drowsiness, poor coordination, slurred speech, blackouts—and can persist for hours, meaning someone may appear stable and then deteriorate.
What remains unknown is why April saw this particular surge, or what specific batch or distribution pattern triggered it. What is known is that the danger has not passed. The warning issued three weeks ago was meant to raise awareness, but the overdoses have continued. Sudbury's emergency services remain under strain, and the people using drugs in the city are navigating a supply that has become measurably more lethal.
Notable Quotes
Street drugs may be cut or mixed with other substances, including benzodiazepines, xylazine, medetomidine, fentanyl, or carfentanil— Sudbury Public Health
If you use drugs, take steps to reduce your risk— Sudbury Public Health
The Hearth Conversation Another angle on the story
Why does it matter that the warning came on April 22 but calls kept climbing?
Because it tells you the warning alone doesn't stop people from using. They're not choosing to overdose—they're choosing to use, and the supply is what it is. A warning helps people prepare, but it doesn't change the fundamental problem: the drugs are poisoned.
What's the difference between fentanyl and carfentanil?
Carfentanil is about 100 times stronger than fentanyl. It's an elephant tranquilizer. If fentanyl is already dangerous, carfentanil is a different order of lethality. A speck too much and someone stops breathing.
Why would dealers mix in benzodiazepines and xylazine if they're trying to sell fentanyl?
Sometimes it's intentional—they're creating a specific high. Sometimes it's contamination from shared equipment or suppliers. Either way, it means naloxone alone might not work. You need multiple doses, and you need to keep someone breathing until it does.
The article mentions "nods." What is that exactly?
It's a state where someone is so sedated they're barely conscious—head drooping, eyes half-closed, barely responsive. It looks like sleep, but it's dangerous because their breathing can stop and they won't notice. That's why using alone is so risky.
If someone calls the National Overdose Response Service, what actually happens?
They're on the line with you while you use. If something goes wrong, they can call 911 for you. It's not judgment, it's just someone there, awake, watching. That presence can save your life.
Why is the recovery position so important?
If someone is unconscious and vomits, they can choke. The recovery position—on their side, head tilted back—keeps the airway open. It's the difference between a medical emergency and a fatal one.