#19 1998 · UK Medicines Control Agency · Public health regulationredesign-the-moment
Britain shrank the paracetamol pack instead of treating the urge to overdose, and poisoning deaths fell by nearly half
the problem
Paracetamol was Britain's most common self-poisoning method
background
By the 1990s paracetamol (acetaminophen) overdose was the leading method of self-poisoning in the UK, and a common one in impulsive, unplanned suicide attempts — many overdoses followed a crisis of hours or even minutes, not weeks of planning. Paracetamol is also unusually dangerous to overdose on: it causes delayed, often fatal liver failure, and by the time symptoms appear it can be too late to treat.
The standard public-health response to a rising suicide method is to target the person — crisis lines, screening, mental-health treatment. All useful, none of it changes how many tablets are within arm's reach at 2am.
the move
In September 1998 the UK's Medicines Control Agency capped over-the-counter paracetamol sales at 32 tablets per pack in pharmacies and 16 in other shops, sold in push-through blister packaging rather than bottles. The law didn't ask anyone to be less impulsive; it added a few extra minutes of foil-popping friction, and a hard ceiling on how many tablets a single purchase could put in someone's hands, at exactly the point where an overdose is decided on impulse.
the payoff
A 2013 study covering the 11¼ years after the law found a 43% reduction in deaths from paracetamol poisoning with suicide or open-verdict rulings in England and Wales — about 765 fewer deaths (990 including recorded accidental poisonings) than expected — and a 61% reduction in registrations for liver-transplant listing due to paracetamol-induced liver damage.
what came after
Published as Hawton et al., BMJ 2013;346:f403, the study is one of the most cited natural experiments in suicide-prevention research and the standard reference for 'means restriction' — reducing access to a specific lethal method rather than treating the underlying crisis — as a distinct, measurable public-health lever.
filed under
references
- [1]Hawton et al. — Long term effect of reduced pack sizes of paracetamol on poisoning deaths and liver transplant activity in England and Wales: interrupted time series analyses, BMJ 2013;346:f403BMJ / PubMed, 2013pubmed.ncbi.nlm.nih.gov
- [2]University of Oxford, Department of Psychiatry — Researchers identify major benefits of smaller packs of paracetamolUniversity of Oxford, 2013psych.ox.ac.uk