Use of New Zealand's most widely taken painkiller, paracetamol, is being reviewed because of concerns in the United States about side-effects that include liver damage.
Three advisory committees have advised the US Food and Drug Administration to reduce the single maximum dose of the common painkiller - known in the US as acetaminophen - from 1000mg to 650mg.
They also recommended reducing the maximum daily dose, but did not specify by how much.
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