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How long cannabis users stay impaired or 'stoned' has been discovered by researchers at the Lambert Initiative for Cannabinoid Therapeutics, as medicinal cannabis prescriptions exceed 100,000 nationwide.
As legal cannabis is prescribed more regularly, lead researcher Dr Danielle McCarthy and associates conducted the most comprehensive study so far into cannabis impairment.
While the intoxicating ingredient in marijuana, THC, can be detected for weeks after consumption, researchers found people remained impaired for between three and 10 hours after consuming moderate to high doses of cannabis.
The Lambert Initiative for Cannabinoid Therapeutics was launched at Sydney University after Barry and Joy Lambert made a $33.7 million donation for research into the therapeutic use of medicinal cannabis.