The health claims that have been made for cannabidiol, or CBD, are almost as numerous as the types of products that contain the compound—1 of the 2 main cannabinoids in cannabis.
Despite its widespread use, evidence of CBD’s safety and effectiveness is lacking, except in the treatment of seizures in patients with 2 rare epilepsy syndromes and tuberous sclerosis complex.
In addition, little is known about how people who consume CBD fare behind the wheel. Much of the research into cannabis’s effect on driving performance has focused on the whole plant and its other main cannabinoid, tetrahydrocannabinol, or THC, which produces euphoria.
Rubin R. Driving Under the Influence of CBD or THC—Is There a Difference? JAMA. 2020;324(21):2144–2145. doi:10.1001/jama.2020.22181
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