“ CBD treatment (120 mg/kg) inhibited more than 75% of hepatic 6 beta-testosterone hydroxylase and erythromycin N-demethylase activities (functional markers of P-450IIIA) after 2 hr.”
“On the other hand, erythromycin N-demethylase activity increased 4-fold after phenobarbital pretreatment and, as in untreated animals, was comparably inhibited by CBD , demonstrating its susceptibility to this drug.”