Medical cannabis patients filled slightly fewer opioid prescriptions over 6 months
Among 68 Israeli chronic pain patients, opioid prescription fills decreased modestly after starting medical cannabis, but no changes were seen in other medications or healthcare service use.
Quick Facts
What This Study Found
Patients filled fewer opioid prescriptions at 6-month follow-up compared to the 6 months before starting medical cannabis. The reduction was statistically significant but of small effect size. No changes in non-opioid medications or healthcare utilization.
Key Numbers
68 patients. Opioid prescriptions decreased from baseline to 6-month follow-up with small effect size. No significant changes in other medication types or healthcare service utilization.
How They Did This
Retrospective cohort study using medical records of 68 Israeli patients with chronic pain who initiated medical cannabis. Compared prescription fills and healthcare service use 6 months before vs. 6 months after starting treatment. Paired t-tests for within-patient comparisons.
Why This Research Matters
The opioid-sparing potential of medical cannabis is one of its most cited justifications. This small study adds to the mixed evidence, finding a real but modest reduction.
The Bigger Picture
The opioid-sparing narrative around medical cannabis is compelling but the evidence remains mostly observational and small-scale. Definitive answers require randomized trials that can separate cannabis effects from regression to the mean and placebo.
What This Study Doesn't Tell Us
Very small sample (68 patients). No control group. Retrospective design using medical records. Cannot account for other changes in pain management. Small effect size questions clinical significance. Israeli medical cannabis system differs from other countries.
Questions This Raises
- ?Would a randomized trial confirm the opioid-sparing effect?
- ?Is the small reduction clinically meaningful for individual patients?
- ?Do certain pain conditions show larger opioid-sparing effects than others?
Trust & Context
- Key Stat:
- 68 patients; small but significant reduction in opioid prescriptions over 6 months
- Evidence Grade:
- Small retrospective cohort with no control group. Preliminary evidence only.
- Study Age:
- Published 2023.
- Original Title:
- Opioid and healthcare service use in medical cannabis patients with chronic pain: a prospective study.
- Published In:
- BMJ supportive & palliative care, 13(e2), e464-e468 (2023)
- Authors:
- Sznitman, Sharon(2), Mabouk, Carolyn, Said, Zahi, Vulfsons, Simon
- Database ID:
- RTHC-04972
Evidence Hierarchy
Looks back at existing records to find patterns.
What do these levels mean? →Frequently Asked Questions
Does medical cannabis reduce opioid use?
This small study found a modest reduction in opioid prescriptions after patients started medical cannabis, but the effect was small. Without a control group, it is impossible to know whether cannabis caused the reduction or whether other factors (like natural pain fluctuation or changing prescriber behavior) explain the change.
Did medical cannabis reduce overall healthcare use?
No. While opioid prescriptions decreased slightly, there were no significant changes in non-opioid medication fills or healthcare service utilization, suggesting the impact of medical cannabis on broader healthcare costs may be limited.
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Cite This Study
https://rethinkthc.com/research/RTHC-04972APA
Sznitman, Sharon; Mabouk, Carolyn; Said, Zahi; Vulfsons, Simon. (2023). Opioid and healthcare service use in medical cannabis patients with chronic pain: a prospective study.. BMJ supportive & palliative care, 13(e2), e464-e468. https://doi.org/10.1136/bmjspcare-2020-002661
MLA
Sznitman, Sharon, et al. "Opioid and healthcare service use in medical cannabis patients with chronic pain: a prospective study.." BMJ supportive & palliative care, 2023. https://doi.org/10.1136/bmjspcare-2020-002661
RethinkTHC
RethinkTHC Research Database. "Opioid and healthcare service use in medical cannabis patien..." RTHC-04972. Retrieved from https://rethinkthc.com/research/sznitman-2023-opioid-and-healthcare-service
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.