40% of chronic pain patients fully stopped opioids after starting medical cannabis, with 87% reporting improved quality of life

Among 525 chronic pain patients using both medical cannabis and opioids, 40.4% completely stopped opioids and another 45.2% reduced their use, with 87% reporting improved quality of life.

Takakuwa, Kevin M et al.·Cureus·2020·Moderate EvidenceCross-Sectional
RTHC-02870Cross SectionalModerate Evidence2020RETHINKTHC RESEARCH DATABASErethinkthc.com/research

Quick Facts

Study Type
Cross-Sectional
Evidence
Moderate Evidence
Sample
N=525

What This Study Found

Of 525 chronic pain patients who used both medical cannabis and prescribed opioids, 40.4% stopped all opioids, 45.2% decreased use, 13.3% had no change, and only 1.1% increased opioid use. The majority (65.3%) sustained the opioid change for over a year. Nearly half (48.2%) reported 40-100% pain reduction. 80% reported improved functioning and 87% improved quality of life. 62.8% did not want to take opioids in the future.

Key Numbers

525 patients; 40.4% stopped opioids; 45.2% decreased; 1.1% increased; 65.3% sustained change >1 year; 48.2% reported 40-100% pain reduction; 87% improved QoL; 62.8% did not want future opioids.

How They Did This

Online convenience survey of patients from 3 medical cannabis practices who had used prescription opioids continuously for 3+ months for chronic pain and were concurrently using medical cannabis. 1,181 responded; 525 met criteria.

Why This Research Matters

The 40% complete opioid cessation rate and 87% quality of life improvement are striking, even accounting for selection bias. If even a fraction of this effect is real, medical cannabis could be a powerful tool in the opioid crisis.

The Bigger Picture

The 62.8% not wanting future opioids is particularly notable. Medical cannabis may not just reduce opioid doses but fundamentally change patient preferences away from opioids, potentially breaking the psychological attachment that contributes to dependence.

What This Study Doesn't Tell Us

Convenience sample from cannabis practices (strong selection bias toward satisfied patients); self-report; no control group; survey cannot establish causation; patients choosing medical cannabis are already motivated to reduce opioids; no verification of opioid cessation.

Questions This Raises

  • ?Would a randomized trial confirm these opioid reduction rates?
  • ?Which chronic pain conditions respond best to cannabis-assisted opioid reduction?

Trust & Context

Key Stat:
40.4% stopped all opioids; 87% improved quality of life; 62.8% don not want future opioids
Evidence Grade:
Moderate: large survey with consistent results, but convenience sample from cannabis practices introduces substantial selection bias.
Study Age:
Published 2020.
Original Title:
A Survey on the Effect That Medical Cannabis Has on Prescription Opioid Medication Usage for the Treatment of Chronic Pain at Three Medical Cannabis Practice Sites.
Published In:
Cureus, 12(12), e11848 (2020)
Database ID:
RTHC-02870

Evidence Hierarchy

Meta-Analysis / Systematic Review
Randomized Controlled Trial
Cohort / Case-Control
Cross-Sectional / ObservationalSnapshot without intervening
This study
Case Report / Animal Study

A snapshot of a population at one point in time.

What do these levels mean? →

Frequently Asked Questions

Can medical cannabis help people stop opioids?

In this survey, 40.4% of chronic pain patients completely stopped opioids and another 45.2% reduced their use after starting medical cannabis. However, this was a self-selected sample from cannabis practices, so the real-world rate may be lower.

Does medical cannabis improve quality of life for chronic pain?

87% reported improved quality of life and 80% improved functioning. Nearly half reported 40-100% pain reduction. These are patient-reported outcomes from people already using medical cannabis, so expectations may have influenced reports.

Read More on RethinkTHC

Cite This Study

RTHC-02870·https://rethinkthc.com/research/RTHC-02870

APA

Takakuwa, Kevin M; Sulak, Dustin. (2020). A Survey on the Effect That Medical Cannabis Has on Prescription Opioid Medication Usage for the Treatment of Chronic Pain at Three Medical Cannabis Practice Sites.. Cureus, 12(12), e11848. https://doi.org/10.7759/cureus.11848

MLA

Takakuwa, Kevin M, et al. "A Survey on the Effect That Medical Cannabis Has on Prescription Opioid Medication Usage for the Treatment of Chronic Pain at Three Medical Cannabis Practice Sites.." Cureus, 2020. https://doi.org/10.7759/cureus.11848

RethinkTHC

RethinkTHC Research Database. "A Survey on the Effect That Medical Cannabis Has on Prescrip..." RTHC-02870. Retrieved from https://rethinkthc.com/research/takakuwa-2020-a-survey-on-the

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.