The case of an 82-year-old who died after being prescribed a high-dose opioid has been given as an example of why better medical understanding is needed.
Associate Health Minister Peter Dunne said an immediate priority was to bring down the high rate of opioid-related harm in New Zealand hospitals, particularly involving drugs used to alleviate pain.
Opioids are a class of medicines that include morphine, methadone and oxycodone.
"They are prescribed and administered widely - from neonatal to surgical units, right through to care of the elderly services," Mr Dunne said.
"But, every day, patients of all ages are exposed to the real and significant risks from the use of opioids in our hospitals, and sometimes harm occurs. This...is often avoidable."