on the subject of opiates in over the counter medication, co-codamol (codine phosphate and paracetamol mix) ie solpadine, tylex ect do have a opiate based analgesic in the codene part of the drug. this will give a positive result. the reason a hostie knows al this is iwas a paramedic and my girlfriend is a probation officer who deals with drug users and testing organisations.
thats my tuppence worth