On Sunday, Strathclyde Police issued a warning about a new "legal high" drug called Annihilation which has led to nine people being hospitalised in the past three months.
It raises questions about the difficulties of policing and legislating to stop legal highs when they are so easily available, and new ones are coming onto the market so quickly.
Detective Inspector Jim Bradley of Glasgow City Centre Police warned of "a legal loophole", saying "it is being sold as incense but individuals are consuming it."
Dr Neil McKeagney, Director of the Centre for Drug Misuse Research explained to Today presenter, Evan Davis, "these drugs are a new threat
they're presenting a massive challenge now."
"Analogue legislation", currently used in US, is the way to deal with drugs described as "legal highs", says Dr McKeganey
"If we continue tackle the drug on a substance-by-substance basis, we will simply not manage to tackle this problem."
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