Nav: Home

Cannabis found not to be a substitute for opioids

November 19, 2019

HAMILTON, ON (Nov. 19, 2019) - There has been interest in cannabis being used as a replacement drug for people with opioid use disorder, but research at McMaster University has found it doesn't work.

The research team looked at all research on the effects of cannabis use on illicit opioid use during methadone maintenance therapy, which is a common treatment for opioid use disorder, and found six studies involving more than 3,600 participants.

However, a meta-analysis of the studies found cannabis use didn't reduce illicit opioid use during treatment nor did it retain people in treatment.

The study was published today in the Canadian Medical Association Journal.

"There is limited evidence that cannabis use may reduce opioid use in pain management, and some high-profile organizations have suggested cannabis is an 'exit drug' for illicit opioid use, but we found no evidence to suggest cannabis helps patients with opioid use disorder stop using opioids," said senior author Dr. Zainab Samaan, associate professor of psychiatry and behavioural neurosciences at McMaster and a Hamilton staff psychiatrist.
-end-
The study was funded by the Canadian Institutes of Health Research.

Editors: A picture of Zainab Samaan is attached.

Post embargo link to the paper: https://bit.ly/2Qjs7fn

For more information or to arrange an interview, please contact:

Veronica McGuire
Media Relations
Faculty of Health Sciences

location: HSC-2E47
phone: (905) 525-9140 x 22169
email: vmcguir@mcmaster.ca

McMaster University | Brighter World

McMaster University

Related Cannabis Articles:

Prescribed CBD could help people quit cannabis
A benchmark clinical trial published today shows that cannabidiol (CBD) could be a safe and effective treatment for problematic cannabis use.
Pregnant women with depression are more than 3 times more likely to use cannabis
Cannabis use is much more common among pregnant women with depression and pregnant women with depression are more than 3 times more likely to use cannabis than those without depression.
Cannabis compound acts as an antibiotic 
Public health agencies worldwide have identified antibiotic resistance of disease-causing bacteria as one of humanity's most critical challenges.
Cannabis use during pregnancy
The large health care system Kaiser Permanente Northern California provides universal screening for prenatal cannabis use in women during pregnancy by self-report and urine toxicology testing.
Questions and answers about cannabis use during pregnancy
A new study shows that women have many medical questions about the use of cannabis both before and during pregnancy, and during the postpartum period while breastfeeding.
Managing cannabis use in breastfeeding women
As more states legalize medicinal and recreational cannabis use and increasingly decriminalize cannabis, the risk to the growth and development of breastfeeding infants whose mothers use cannabis becomes a growing public health concern.
Cannabis edibles present novel health risks
With the recent legalization of cannabis edibles in Canada, physicians and the public must be aware of the novel risks of cannabis edibles, argue authors in a commentary in CMAJ (Canadian Medical Association Journal).
Compliance with ID rules in recreational cannabis stores
A new study finds that recreational cannabis stores in Colorado and Washington state, both of which legalized adult recreational use in 2012, show high levels of compliance with rules preventing underage purchase of cannabis.
Study reveals increased cannabis use in individuals with depression
New findings published in Addiction reveal the prevalence of cannabis, or marijuana, use in the United States increased from 2005 to 2017 among persons with and without depression and was approximately twice as common among those with depression in 2017.
Cannabis reduces headache and migraine pain by nearly half
Inhaled cannabis reduces self-reported headache severity by 47.3% and migraine severity by 49.6%, according to a recent study by Washington State University researchers published in the Journal of Pain.
More Cannabis News and Cannabis Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Debbie Millman: Designing Our Lives
From prehistoric cave art to today's social media feeds, to design is to be human. This hour, designer Debbie Millman guides us through a world made and remade–and helps us design our own paths.
Now Playing: Science for the People

#574 State of the Heart
This week we focus on heart disease, heart failure, what blood pressure is and why it's bad when it's high. Host Rachelle Saunders talks with physician, clinical researcher, and writer Haider Warraich about his book "State of the Heart: Exploring the History, Science, and Future of Cardiac Disease" and the ails of our hearts.
Now Playing: Radiolab

Insomnia Line
Coronasomnia is a not-so-surprising side-effect of the global pandemic. More and more of us are having trouble falling asleep. We wanted to find a way to get inside that nighttime world, to see why people are awake and what they are thinking about. So what'd Radiolab decide to do?  Open up the phone lines and talk to you. We created an insomnia hotline and on this week's experimental episode, we stayed up all night, taking hundreds of calls, spilling secrets, and at long last, watching the sunrise peek through.   This episode was produced by Lulu Miller with Rachael Cusick, Tracie Hunte, Tobin Low, Sarah Qari, Molly Webster, Pat Walters, Shima Oliaee, and Jonny Moens. Want more Radiolab in your life? Sign up for our newsletter! We share our latest favorites: articles, tv shows, funny Youtube videos, chocolate chip cookie recipes, and more. Support Radiolab by becoming a member today at Radiolab.org/donate.