Cannabis has no clear effect on treatment of opioid addiction, US study finds

As cannabis gains popularity among individuals with opioid use disorder in the U.S., its medicinal use is now legally recognized in thirty-seven states and Washington D.C. While pain remains the most common reason for medical cannabis authorization (i.e., “medical cannabis registration card”), an increasing number of states are adding “alternatives to opioids” or “opioid-treatable disorders” to their lists of approved conditions. In certain states, this includes treatment for opioid use disorder.

It isn’t clear, however, whether cannabis helps or hinders the treatment of opioid use disorder. Some studies have found it helps alleviate pain and opioid withdrawal, but others suggest it makes a return to opioids more likely.

“Clarifying how cannabis and opioids interact is crucial if we are to equip healthcare professionals to provide evidence-based addiction treatment, prevent overdose deaths and save lives,” says researcher Gabriel Costa, of University of Ribeirão Preto in Brazil.

Reference: Cannabis has no clear effect on treatment of opioid addiction, US study finds; The American Journal of Drug and Alcohol Abuse; DOI: 10.1080/00952990.2023.2287406