Effect of CannEpil® on simulated driving performance and co-monitoring of ocular activity: A randomised controlled trial.
J Psychopharmacol
; 37(5): 472-483, 2023 05.
Article
in En
| MEDLINE
| ID: mdl-37129083
ABSTRACT
BACKGROUND:
Medicinal cannabis products containing Δ9-tetrahydrocannabinol (THC) are increasingly accessible. Yet, policy guidelines regarding fitness to drive are lacking, and cannabinoid-specific indexations of impairment are underdeveloped.AIMS:
To determine the impact of a standardised 1 mL sublingual dose of CannEpil®, a medicinal cannabis oil containing 100 mg cannabidiol (CBD) and 5 mg THC on simulated driving performance, relative to placebo and whether variations in vehicle control can be indexed by ocular activity.METHODS:
A double-blind, within-subjects, randomised, placebo-controlled, crossover trial assessed 31 healthy fully licensed drivers (15 male, 16 female) aged between 21 and 58 years (M = 38.0, SD = 10.78). Standard deviation of lateral position (SDLP), standard deviation of speed (SDS) and steering variability were assessed over time and as a function of treatment during a 40 min simulated drive, with oculomotor parameters assessed simultaneously. Oral fluid and plasma were collected at 30 min and 2.5 h.RESULTS:
CannEpil did not significantly alter SDLP across the full drive, although increased SDLP was observed between 20 and 30 min (p < 0.05). CannEpil increased SDS across the full drive (p < 0.05), with variance greatest at 20-30 min (p < 0.001). CannEpil increased fixation duration (p < 0.05), blink rate (trend p = 0.051) and decreased blink duration (p < 0.001) during driving. No significant correlations were observed between biological matrices and performance outcomes.CONCLUSIONS:
CannEpil impairs select aspects of vehicle control (speed and weaving) over time. Alterations to ocular behaviour suggest that eye tracking may assist in determining cannabis-related driver impairment or intoxication. Australian and New Zealand Clinician Trials Registry, https//anzctr.org.au(ACTRN12619000932167).Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Automobile Driving
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Cannabidiol
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Cannabis
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Medical Marijuana
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Hallucinogens
Type of study:
Clinical_trials
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Guideline
Limits:
Adult
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Female
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Humans
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Male
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Middle aged
Country/Region as subject:
Oceania
Language:
En
Journal:
J Psychopharmacol
Journal subject:
PSICOFARMACOLOGIA
Year:
2023
Document type:
Article
Affiliation country: