The court heard how the distraught girl later took a number of paracetamol tablets and required hospital treatment.

BBC: Robert Wilson

The study added that additional measures would be needed to reduce the death toll, such as further lowering the limit on tablets in packs, reducing the paracetamol content of the tablets and enforcing the legislation more effectively.

BBC: Fall in paracetamol deaths 'linked to pack limits'

There is also evidence that the United Kingdom has had success reducing suicide attempts involving the pain reliever acetaminophen, also called paracetamol, by restricting the number of tablets of medication that could be sold in a packet, Gould said.

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