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News items on 'Opioid Analgesics'

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'Clue' to sexes' pain difference

(BBC 24/12/2008)

Experiments in rats may have revealed why some painkilling drugs are less effective in women compared with men. US researchers found brain differences affecting the potency of opioids such as morphine. The Journal of Neuroscience study also found drug effectiveness varied during the rats' menstrual cycles.

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