Since the recent ban on mephedrone, many so-called "legal substitutes" available on the internet are in fact banned cathinones (chemically related to amphetamines) and just as risky, warn experts in a letter to this week's BMJ.
One such product is Energy 1 (NRG-1), also advertised as naphyrone (naphthylpyrovalerone, O-2482), write Simon Brandt and colleagues. These products are offered as legal substitutes for the recently criminalised "legal highs," the mephedrone derivatives.