Xanax (Alprazolam) is a prescription drug which is not available on the NHS. It is a very powerful Benzodiazepine that is used to treat anxiety and is highly addictive, with 1mg of Xanax having the equivalent potency of 10mg of diazepam; the closest prescribable medication available on the NHS.
There has been a recent increase in people buying 'street benzos' both in person from dealers and online. These are fake and illicit drugs that are being manufactured in people's cellars, attic rooms and other unknown locations and are made to look like the real thing. The fake pills can be extremely convincing, with packaging and even information leaflets appearing to look like a legitimate form of MHRA (Medicines and Healthcare products Regulatory Agency) approved medication.
'Street benzos' are being manufactured in people's cellars or attic rooms and, despite the packaging and patient information leaflets looking very realistic, they have been found to contain harmful substances known as 'research chemicals' which are causing hospitalisations and deaths.
Recently these fake Xanax bars are known to have been sold in Sheffield as "Green Hulk", also available in dark red and blue (originally to denote strength and release rate - but this can be highly inaccurate due to varying and unknown ingredients).