The article reports that unused and discarded medicines cost the NHS at least £480 million each year, highlighting the scale of avoidable waste in the health service. It matters because reducing unnecessary prescribing, unused supplies and poor disposal could free money for patient care while limiting environmental harm.

The reported quantity of wasted medicines is compared with enough material to fill 75 Olympic-size swimming pools. The figure appears to cover medicines that are prescribed but not used, as well as stock that becomes unusable or expires, although the article text provided gives no further breakdown of the estimate.