In Vitro Enzyme Inhibition Experiment

CBD Inhibition on CYP1A2

Inhibition was detected.  Cutoff used —

CBD was predicted to precipitate strong drug interactions (AUCR greater than or equal to 5) mediated by CYP2C9, 2C19, and 3A and moderate drug interactions (AUCR between 1.2 and 5) mediated by CYP1A2 and 2D6 based on the AUCR cutoffs recommended by the FDA (https://www.fda.gov/media/134582/ download). 

Table 1 lists the oral and inhalational doses and estimated maximum plasma concentrations of CBD, THC, and THC metabolites used for predicting the magnitude of pharmacokinetic cannabinoid-drug interactions. 

theophylline 1237049

cannabidiol

caffeine 1134439

  • CYP1A2 4312402

Cell fraction Pooled human liver microsomes -7999662

Results

Sample Compound measured Value Measurement Study sequence Additional information N replicates

Experimental Conditions

0.1 mg/ml

Commercially available

50 µM