NHS Greater Glasgow and Clyde has issued a warning to drug users against inhaling crack cocaine following a spate of suspected drug incidents.
The health board has said the drug could be “very strong or cut with something dangerous”.
It comes after a 52-year-old man died and three people required medical treatment after taking unwell on Cambridge Street in the city on September 8.
Investigators are treating the incident as drug-related.
A NHSGGC spokesperson said: “A warning has been issued to drug users and relevant services regarding the use of crack cocaine, via inhalation.
“Overdoses can take place when this drug is very strong or cut with something dangerous. They can also be linked to taking other drugs.”
Drug users have been advised to avoid using homemade pipes and not to take additional drugs while under the influence.
Public Health Scotland previously issued a warning on synthetic opioids nitazenes after the drugs were detected in 38 deaths in just three months.
Nitazenes are most commonly detected as a contaminant in drugs sold as heroin, benzodiazepines and oxycodone and have been increasingly detected in post-mortem examinations across Scotland, the body said.
An alert warned that the laboratory-made opioids pose a substantial risk of overdose, hospitalisation and death.
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