Wallrock, William Charles - Non-inquest findings

22y · Male·mixed drug toxicity due to methadone, codeine, and morphine (metabolite), compounded by norfluoxetine interaction, following dental abscess from impacted wisdom teeth extraction

William Wallrock, 22, died from mixed drug toxicity four days after wisdom tooth extraction. He was initially appropriately advised to use paracetamol and ibuprofen. When inadequate pain relief prompted him to seek further medical care, Dr T. prescribed Mersyndol Forte (appropriate) and supplied methadone from her own expired prescription (inappropriate). Methadone is unsuitable for acute ambulant pain in opioid-naïve patients due to unpredictable metabolism and overdose risk. Critical compounding factors included: undetected prior fluoxetine use (its metabolite norfluoxetine prolonged methadone half-life by up to 75%); high concurrent codeine consumption; inconsistent verbal versus written dosing instructions; and William taking 50mg methadone over 30 hours rather than adhering to night-only instructions. Experts concluded this death was avoidable through appropriate pain management protocols and awareness of drug interactions.