Don’t trust labels on edible cannabis, study finds

Only 17% of products tested were accurately labelled

People buying edible cannabis products from marijuana dispensaries can’t trust the labels because they can overstate or understate the amount of delta-9-tetrahydrocannabinol (THC), according to a new study involving West Coast products.

Researchers say their results suggest that consumers might be overdosing, risking side effects such as psychosis and serious anxiety, not to mention being cheated, by false labels.

“If this study is representative of the medical cannabis market, we may have hundreds of thousands of patients buying cannabis products that are mislabelled,” says Ryan Vandrey, an associate professor of psychiatry and behavioural sciences at the Johns Hopkins University School of Medicine. He’s the lead author of the study published this week in the Journal of the American Medical Association.

Dr. Patricia Daly, chief medical officer of Vancouver Coastal Health, said she agrees with Vandrey that improved labelling and more oversight is...

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URL: 
http://www.vancouversun.com/health/trust+labels+edible+cannabis+study+finds/11164033/story.html