Paediatricsmiddle twist
A mother brings her 18-month-old son to the general practice for a routine check. Her own mother has just moved in and keeps her tablets in a weekly pill organiser on a low bedside table. The toddler climbs onto the bed and has twice been found alone in that room. You are helping the family decide which of the grandmother's medicines must be locked away first. Which one of the following would be most likely to kill this child if he swallowed a single tablet?