New 'legal highs' pose challenges and risks
26 January 2014 Last updated at 09:10 GMT
Scientists testing "legal highs" say they are coming across new mind-altering psychoactive substances.
Forensic scientist Fiona Coope, from the Environmental Scientifics Group in Staffordshire, said when a substance was banned a new one was made to take its place.
BBC Inside Out speaks to 20-year-old Coran Wright from Derbyshire who says despite the dangers she is prepared to take the risk.