Adults often substitute cannabis for the use of prescription medications, according to data published in the Journal of Pain Research.

Investigators from the Bastyr University Research Institute assessed the frequency of drug substitution among a self-selected national sample of 2,774 self-identified marijuana consumers.

Just under half of respondents (46 percent) reported using cannabis in place of prescription medications. Respondents were most likely to use cannabis in lieu of narcotics/opioids (36 percent), anxiolytics/benzodiazepenes (14 percent), and antidepressants (13 percent).

Women were more likely than men to report drug substitution, as were older respondents. Those who identified as medical cannabis patients were more than four times as likely as non-medical users to report drug substitution.

“These data contribute to a growing body of literature suggesting cannabis, legal or otherwise, is being used as a substitute for prescription drugs, particularly prescription pain relievers,” authors concluded.

The study’s conclusions are similar to those of several others, such as these here, here, here, and here, finding reduced prescription drug use and spending by those with access to cannabis.