Synthetic drugs: What they are, how they work and why they're hard to spot

Australia has reported a jump in synthetic drug-related overdoses, causing rising demand for overdose medication. So what are synthetic drugs and how do they differ from existing illicit substances?

Synthetic drugs: What they are, how they work and why they're hard to spot
Australia has reported a jump in synthetic drug-related overdoses, causing rising demand for overdose medication. So what are synthetic drugs and how do they differ from existing illicit substances?