Wasted medicine: why England throws away enough to fill 75 swimming pools a year
A body representing England's pharmacy sector says the volume of partly used medicine thrown away each year is enough to fill 75 Olympic-sized swimming pools. According to the National Pharmacy Association (NPA), roughly 3,400 tonnes of medicine were disposed of in England during 2024-25.
The figure isn't just an abstract waste statistic. Every discarded box represents money already spent from the NHS prescription budget, on a product that was manufactured, packaged, and delivered to a pharmacy. The NPA describes the scale of the problem as "growing" and in need of urgent attention.
Much of the waste is linked to the repeat prescription system. Many patients with chronic conditions receive medicine through prescriptions that renew automatically at regular intervals; but when a treatment plan changes, a dose is adjusted, or a patient simply stops taking a medicine, leftover boxes tend to pile up in cabinets and eventually end up in the bin.
The NPA's proposed fix is more frequent and more careful review of repeat prescriptions. Regular check-ins between pharmacists, family doctors and patients to confirm how much medicine is actually still needed could help cut back on unnecessary stockpiling.
There's also a safety dimension to the problem. Unused medicine accumulating at home raises the risk of accidental ingestion, access by children, or improper disposal that lets drugs leak into the environment. Most medicines are meant to be disposed of through designated collection points, not household waste.
The cost dimension is too large to dismiss as a side issue. The NHS prescription system draws on public funds, and every wasted box represents resources that could have gone elsewhere in a health system already under budget pressure.
Pharmacists suggest patients regularly review their medicine cabinets and return unused drugs to a pharmacy rather than throwing them away. That ensures safe disposal and also helps the system get a clearer picture of the true scale of the waste.
Some experts see the wider rollout of digital prescribing systems as part of the solution. Where a patient's medication history is tracked more transparently, unnecessary renewals should, in theory, be easier to catch before they happen.
Still, the NPA stresses that technology alone won't solve the problem — regular human review needs to stay at the centre of the system. Prescription renewal moments should be treated as opportunities to question not just whether a medicine should continue, but whether it's still genuinely needed.
The figure, in the end, points to a problem that looks small at the level of a single box but adds up to a substantial inefficiency across England's health system — and suggests the fix lies less in a big technological leap than in adding more attention and regular review to the prescribing process itself.
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