Inquest into the death of Lauren Maree Johnstone

48y · Female·Combined toxic effect of prescription and non-prescription medications including doxylamine, tramadol, codeine, oxycodone, zopiclone and fluoxetine

Lauren Johnstone, aged 48, died from the combined toxic effects of prescription and non-prescription sedative medications including oxycodone, tramadol, codeine, zopiclone, doxylamine and fluoxetine. She had undergone multiple surgeries in December 2014–January 2015, during which opioids were prescribed without full awareness of her existing medication regime. Critical clinical lessons include: (1) obtaining complete medication histories including over-the-counter drugs, particularly sedating agents; (2) ensuring communication between treating specialists about concurrent medications and procedures; (3) recognising drug interaction risks when prescribing opioids to patients already taking multiple sedatives; and (4) implementing mandatory prescription monitoring systems. The coroner found no evidence of suicide or intentional overdose, concluding the death resulted from lawful medications with unforeseen cumulative toxicity. Patient non-disclosure complicated matters, but enhanced clinical communication and systematic drug tracking could have identified the dangerous polypharmacy.