A highly dangerous synthetic cannabis is either sprayed on to herbal smoking material or added to cigarettes in powder form.
Public Health England says the chemicals known as 'spice' can cause sickness and convulsions - and while there haven't been any cases recorded in Devon, the substance may well be available here.
The Exeter drug and alcohol charity RISE wants to pass the warning on to local residents.
Young voices barely registered in devolution consultation
Only eight people under the age of 24 registered a view
Energetic Pretty Woman is a must-see
REVIEW: Pretty Woman The Musical
Devoncast - Police and Crime Commissioner election special
Devoncast is back with the latest from around the county
New pledge on South Hams Freeport funding
'It is taxpayers’ money, but that money is being spent in the South Hams'
Axminster children connect with space station
Space cadets link live with astronaut
East Devon should get new CEO
Local Government Association recommends new boss
