Medications which reinforce the effect of natural brain opioids could be an improved way to reduce anxiety compared to receptor-binding opioid drugs like morphine, which have major side effects, says new research from the University of Sydney.

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Medications which reinforce the effect of natural brain opioids could be an improved way to reduce anxiety compared to receptor-binding opioid drugs like morphine, which have major side effects, says new research from the University of Sydney.