You have to live with heroin addiction (and the methadone addiction) to get the full flavour. Then you work down the list: methadone, detox, naltrexone, subbutex, DDTOs, prison, counselling, (shopping vouchers!). The vouchers apparently will be given to users when they are drug free. Naltrexone is given when drug free and people still relapse. This brings me back to 2 options: prescribed heroin or long term rehabilitation; give the vouchers to the families to give them the incentive to keep going!